Part 4

I am quite aware that there is another theory which assumes that impregnation takes place twelve months before the exclusion of the ova. But a very careful and long continued examination of the spawning of minnows and lampreys (I have never been able closely to examine the spawning of Salmon), convinces me that it is not a correct one. Besides, did any one ever succeed in hatching the ova of a fish which had not been allowed to come in contact with milt after exclusion? If they have, when, where, and how has this been accomplished, and where is it recorded? I know that I could never succeed, although I have often tried the experiment. On the other hand, it is the easiest thing imaginable, with due care and a suitable situation, to hatch those which have been properly impregnated after exclusion. But if, to avoid argument, I admit that this theory is correct, it will not at all interfere with artificial breeding of Trout and Salmon; on the contrary, it will materially facilitate it. It will only be necessary to catch female fish with the ova ready for exclusion, and place these ova in clean gravel in a box, as before described, but there will be no occasion for males. But supposing Trout and Salmon can be bred in this manner, which I by no means believe, there would be no means of breeding hybrids, which I consider a far more important achievement, and to which I will now refer.

Ever since my attention was turned to the artificial breeding of fish, it has always appeared to me exceedingly desirable and important to breed hybrids between the Trout and the Salmon. The fry of the Salmon, which, by-the-bye, is perhaps the most delicately flavoured fish that exists in this country, although it lives and thrives in fresh water for two or three years, if kept in a locality where it cannot escape to the sea, yet, if kept longer than that time, pines away and dies. If, therefore, we could obtain a hybrid fish, bred between the river Trout and the Salmon, we should probably produce a fish which, being a mule, would be always in good condition; being crossed with a river fish, it would probably never require a visit to salt water to keep it in good health. Being crossed with a Salmon, it ought to get to a good size in a comparatively short period; and, if it would rise at the artificial fly, or the minnow, ought to afford first-rate sport to the angler.

There does not appear to be a greater specific difference between the Trout and the Salmon than there is between the horse and the ass, between the mallard and the musk duck, or between a cabbage and a turnip. But hitherto, in all my experiments, I have never succeeded in producing a hybrid between the Trout and the Salmon. Yet I do not despair of doing so, for there was always a something to complain of, and to doubt about, in every one I tried, and I still think I shall succeed by perseverance. Even if I shall succeed, the result may not prove quite so favourable as I anticipate, but may turn out as unfortunately as the marriage of the gentleman in the story, which relates that, being good- tempered but ugly himself, he married a handsome ill-tempered wife, hoping that his children would have his good-temper and their mother's good looks; but when they came, they were as ugly as the father and as ill-tempered as the mother. So it may prove with these hybrids--they may not always thrive in fresh water; they may not grow to a good size; they may not rise at the artificial fly; they may be worthless for the table. Nevertheless, it is desirable if possible that this should be ascertained. The progeny of a male Salmon and a female Trout may be much better or much worse fitted for a continual residence in fresh water than the descendants of a male Trout and a female Salmon; but this can only be determined by experiment. Dr. Lindley says, in his introduction to the "Guide to the Orchard," that in the cross fertilization of fruits, the seedlings always partake more of the character of the male than of the female parent. But I believe that in breeding mules it is found more desirable that the father should be an ass than a horse. In my poultry yard I breed hybrids between the musk duck and the common duck, and I find that I have a much better progeny from the musk drake and the common duck than from the common drake and the musk duck. In the latter cross, although the males are fine birds, the females are not larger than a widgeon, and fly about almost like wild ducks. This may not always be the case, but it has proved so with me.

But to return to the fish. If any gentleman who is interested in such matters will do me the honour to read this paper, and wishes for further information on the subject, I shall be happy to give it, so far as I am able. Very sure I am that the sportsman who once fairly starts as a fly-fisher, and is so fortunate as to hook a Salmon or a large Trout, will thenceforward despise or lightly esteem corks and floats, ground-bait and trimmers, punts and Perch fishing, and will fairly wish them all exchanged for a nice stream well stocked with Trout--as a gentleman lately said to me, fly- fishing is a perfect infatuation! He was quite right. The extreme avidity with which it is followed by the thoroughly initiated, can only be explained on that supposition; to the casual observer, there does not appear to be any strong excitement in it. But that is a great mistake. Let me get to the bank of a river well stocked with Trout in a good humour, early in the morning, and I feel neither hunger, thirst, nor fatigue if I fish until dark without tasting of anything. And the excitement of hooking a ten or twelve pound Salmon is not much inferior to that produced by a long run after the hounds.

I cannot conclude without calling the attention of all interested, and who are able to render assistance in remedying the evil, to the great falling off in the quantity of fish there is in all the Salmon rivers in England. With those in Scotland and Ireland I am not acquainted, but believe that matters are not in a much better state there. I believe that the unsatisfactory state of the laws has a great deal to do with this decline in the value of the fisheries, and I also believe that it is quite possible so to alter the law as to very greatly improve them, and that without improperly interfering with what is of far more importance--I mean the manufactories of the country. As the law stands at present the proprietors of the upper parts of rivers have not the slightest interest in the preservation of the fish in the breeding season, for, as they are seldom allowed to see a fish when it is fit for the table, why should they look after the poachers in close time? Why should they be put to much expense and trouble, as well as the risk of the lives of their game-keepers, merely to breed fish for the proprietors of stake nets and estuary fisheries, who don't spend a farthing in the preservation of the fish when breeding, and yet reap all the benefit? I had occasion, some years ago, to examine the evidence on this subject given before the House of Commons in 1825, and was exceedingly amused at the schemes resorted to to evade the law, moderate and inefficient as was the law at that time. (Since then the law has been altered both in Scotland and Ireland, but I do not know what are the provisions, nor what has been the effect of the new law.) It required that there should be a free passage for the fish (Salmon) through all the traps, nets, weirs, and devices that were used to catch or detain them, from sunset on Saturday night to sunrise on Monday morning. One man said he paid L7,000 a year for his fishery, and should lose one-seventh of his catch. Another said he allowed a free passage on Sundays, but would not permit anybody to go and examine for themselves. A third proved that he allowed the fish a free passage on Sundays, but his neighbours proved that he placed in the gap a crocodile, painted red. And a fourth was convicted of breaking down the stake nets in the estuary of a river--at the same time he had a net stretched entirely across the river above, both day and night. And so with many others, every one striving with all his might to kill the goose that laid the golden eggs.

This is not the way to improve the Salmon fisheries. To do this effectually the upper proprietors must have a strong interest in the preservation of the breeding of fish, and in order to give them this interest they ought to have an ample supply of fish when they are in the best condition; but to give them this supply the law ought to be altered. At present I believe the law does not require a free passage for the fish (at least in English rivers) except from Saturday night to Monday morning; in many of them I believe this is not insisted upon; whereas the law ought to prohibit fishing for or obstructing the passage of the fish every night from sunset to sunrise, and this regulation ought to be rigorously enforced. This would give the upper proprietors a chance of having good fish, and a corresponding inducement to take care of them. Nobody would be so much benefited as the owners of fisheries at the mouths of rivers; they would be the first takers, and would still get the lion's share of all the fish that ascended the river. If this regulation were enforced, the expenses of conservators might be defrayed by levying a small tax, in the shape of a licence for angling, which all true sportsmen would be glad to pay if it gave a reasonable prospect of a well-stocked river. Now matters are getting worse every day, and notwithstanding the enormous fecundity of the Salmon (a large one producing 25,000 ova in a season), they are now extinct in some rivers where they used to be found in my recollection, and in others where they were once abundant they are now very scarce. No one need to wonder at this, when he is told that gangs of poachers are on the look-out for them all through the spawning season. In one winter, some years ago, I am credibly informed that two hundred Salmon were taken in one stream within five hundred yards of the spot where I am now writing. It is nobody's business and nobody's interest to prevent this, and therefore it goes on openly night and day.

Are there no influential gentlemen in the House of Commons who will take up this matter and endeavour to get an equitable and comprehensive law passed for the preservation and increase of the breed of Salmon? It is a matter of even national importance, and if duly provided for and properly attended to, I see no improbability in the supposition that Salmon would again be as abundant as they were when the apprentices on the banks of the Ribble stipulated that they should not be compelled to eat Salmon oftener than three days in the week. The apathy of country gentlemen in this matter is to me unaccountable. I have some reason to believe, however, that Government have at all times been so far from lending their influence to the promotion of any attempts to amend these laws, that they have obstructed rather than assisted them, most probably from an idea that the preservation of the fish would interfere with manufactories. If I thought that this would be the case, I should not say a word on the subject; but I am very far from holding such an opinion. So far from this being the case, I assert without hesitation that weirs need form no obstruction to the free passage of fish, and that without impairing the efficiency of the water power. With the poisonous and filthy mixtures sent by some manufactories down the rivers, the case is far different, and where this is done the case is hopeless. Salmon and Trout will rapidly disappear from such rivers, never to be seen there again, so long as these noxious contaminations are permitted to flow into them.

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ARTIFICIAL BREEDING OF FISH.

CLITHEROE, December 26th, 1853.

To the Editor of the "Manchester Guardian."

SIR,--I have read with some interest the letter of your correspondent, Salmo Salar, on the artificial breeding of fish; and knowing, as I do, the great interest which the writer feels in the preservation and increase of his namesakes, I shall be most happy if my humble efforts in the same cause throw any more light on the same subject, and in any degree contribute to the same end.

But Mr. Salmo Salar is quite wrong in saying that, with the exceptions of the experiments made on the banks of the Hodder, by Ramsbottom, no efforts have been made to increase the number of Salmon by providing artificial breeding-places. Passing over my own numerous experiments here for the last fourteen or fifteen years (which you, Sir, are aware of, though the fishing world is not), I may refer to the extensive experiments made by Mr. Fawkes, of Farnley, in 1841 and 1842, and renewed again in 1848 and 1849; and the whole of which (with the exception of a portion of these in 1842) were successful. The experiments of Salmo Salar were not made until 1851 and 1852, and were intended merely to test the accuracy of an assumption that the impregnation of the ova takes place long prior to their exclusion; which experiments terminated in a complete failure. Salmo Salar says that the quantity of Salmon fry in the river is enormous; and that he has caught five pounds of them in a single pool in a single day. I have known three times that quantity caught in the same way. But still this proves nothing at all, for it is well known that almost all migratory animals, however solitary their general habits may be, are gregarious at the time of migration. Witness swallows, fieldfares, and even woodcocks. Witness also the clouds of small Eels ascending the rivers in May and June; and if we are to believe the accounts of travellers, the enormous flocks of antelopes in Africa, and of bisons in America, are proofs of the same general law. No doubt Salmo Salar will find, as he says, that the Samlets are exceedingly abundant in some of the pools, when they have flocked together for the purpose of migration; but he may perhaps travel for miles either up or down the river before he will find any more. It is notorious that, in the tributaries of the Hodder, they are walled in, in many places, for the purpose of detaining them, that unscrupulous anglers may get as many of them as possible before they go to the sea. Salmo Salar is in error also when he says that Ramsbottom deposited 40,000 in the ponds of Galway, of which 20,000 are expected to be fruitful. The fact is, that he deposited 40,000 in December, 1852, of which above 20,000 are now alive and in the ponds, varying from four to five inches long to two or three, notwithstanding that experiment was made under very unfavourable circumstances; for there was so much mud in the stream that supplied the spawning-boxes, that when Ramsbottom left Galway he was afraid all the ova would be choked by it.

Salmo Salar seems to think that almost all the ova deposited naturally come to life, and that very few of those deposited artificially do so. This, however, is quite contrary to my experience, and I think that if Salmo Salar will listen to the evidence he will change his opinion. It is well known that Salmon are very fond of particular streams, their instinct no doubt informing them which are suitable to their purpose; and when one pair of fish have finished spawning, another pair will come and occupy the same place. Now, what takes place under such circumstances? The ova which were deposited by the first pair are rooted up by the second, and their specific gravity is so near that of the water, that they roll down out of the loose gravel and are picked up by the Trouts, Par, and other fish that are always lying in wait just below for that purpose. When Ramsbottom was in Galway he caught a large Trout, out of whose throat he squeezed a thousand ova, which were deposited in a spawning-box, many of which came to life notwithstanding the pit they had escaped from. The extraordinary avidity with which Trout take Salmon roe as a bait is also a proof (if that were needed) of their preying upon it in the spawning beds. Yet, in addition to them, are all the Par, Bullheads, Eels, Loaches, and aquatic larvae which may be found swarming in every spawning bed by any one who will look for them. In addition to these enemies, millions of the ova are destroyed by being washed away by heavy floods, and as many more are destroyed by being choked with mud and sand in the spawning beds as well as by being left dry at low water owing to the Salmon spawning in places which frequently become quite dry in early spring. No doubt many of the Salmon fry when they have reached the sea are destroyed by enemies there, of which we know nothing. But still, if 500,000 are bred, in addition to all that are reared naturally, it will represent a larger proportion of the whole than Salmo Salar seems to suppose; otherwise, how is it that in rivers where Salmon are protected, or still more in unsettled countries, the Salmon are so numerous? The Salmon in the Columbia river, on the north-west coast of America, are cast dead upon the shores by myriads after the spawning season, and these are merely the fish dying from exhaustion, as a small portion always do here. How numerous, then, are those which ascend the river to spawn, and go down again to the sea afterwards! No doubt the grand object to be attained is to make Salmon abundant, and the most important step towards the attainment of this object will be to give an efficient protection to the spawning fish, and the only way to do this effectually is to give the upper proprietors of rivers such an interest in the Salmon fisheries as will make them worth attention. At present this is far from being the case. Now the upper proprietors are merely considered as so many clucking hens, whose business and whose duty it is to hatch Salmon for the proprietors of fisheries at the mouths of rivers, who do not in many cases spend a farthing in their protection when spawning, and who grievously begrudge the upper proprietors every fish that is able to pass their nets and other engines of destruction. Let the upper proprietors of Salmon rivers bestir themselves so to amend the law as to give them a chance of having a supply of Salmon when they are in season. They cannot and will not have a more efficient ally than Salmo Salar. Salmo Salar is in my opinion quite right when he says that the fish kept in ponds will not be quite so well able to take care of themselves as fish which have been bred and lived all their lives in the river. Nor do I think that this is necessary for any longer period than until the young fry get rid of the umbilical vessel; after which they are quite able to take care of themselves. Before that time they are scarcely able to move, and thousands of them fall a prey, not only to the other fish, but to the larvae of aquatic insects which prey upon them very greedily. As I happen to know from my own observations, the larva of the stone fly (May fly of Lancashire) and those of all the larger ephemera (drakes), to say nothing of the fresh-water shrimps, swarm in all the spawning beds, and no doubt destroy myriads of the ova. All these would be saved by proper precautions and well formed spawning-boxes, with good supplies of spring water to feed them.

I think Salmo Salar has very greatly over-estimated the quantity of Salmon fry that go down to the sea from the rivers. He speaks of them going down by millions. Now we will take the river Hodder as a river with which both Salmo Salar and myself are well acquainted, and I will venture to say that, so far is this an over-estimate, that if he would take the hundredth part of the number he would be much nearer the truth. The Samlets when they go to the sea may be reckoned to weigh eight to the pound, and two millions would at that rate weigh one hundred and ten tons. Does Salmo Salar think that one ton and a tenth of Smolts go down the river Hodder to the sea on an average of years? I have more favourable means of judging of the quantity that go down the river Ribble than I have of those of the Hodder, and I believe I should very greatly exaggerate their numbers if I estimated them at any such weight as a fourth of that quantity. Again, the Hodder and the Ribble are, in some respects, far more favourable for spawning than many other rivers; for partly owing to the country through which they pass, and partly owing to the rapidity of their streams, the gravel is large and very suitable for spawning in; there is also far less mud and sand in them, and the spawning beds are much less liable to be choked up than they are in many other rivers. No doubt the Salmon will make the best selection in their power, but they can only select from such places as there are; and if those are not suitable the ova must be in a great measure destroyed. Since Ramsbottom returned from Scotland he has visited the river Dee, about forty miles from Chester, and there he found the spawning beds (ridds as Salmo Salar calls them) silted up with mud and sand, and the ova buried in them to the depth of eighteen inches. How or when were the newly hatched fish (supposing, which is very improbable, that they ever did hatch) to make their escape from such a heap of filth? It would be quite impossible.

In conclusion, it seems desirable and quite necessary to say a few words as to the priority of discovery of this process of fish propagation. The French claim it; the Irish seem to claim it; the Messrs. Ashworth take great credit for it; and now Salmo Salar says he first suggested it. Allow me, as there are so many claimants in the field, to suggest one or two more. In the year 1832, without knowing that such a thing had ever been done or even thought of, I made some experiments on the spawning of fish and the artificial impregnation of their ova, which I communicated to "Loudon's Magazine of Natural History," in which they appeared. After that came the Duke of Buccleuch's game-keeper, Shaw, whose experiments were both satisfactory and conclusive. This was in 1836 or 1838. Then after my experiments at home, I induced Mr. Fawkes to take up the matter in 1841, and they were resumed in 1842, and again in 1848 and 1849, both with Salmon and Trout. It was at this period that Ramsbottom came into the field. At Mr. Fawkes's request I instructed him in the art, and sent him to Farnley, where he was perfectly successful; and since then, I believe he has had more experience and been more successful than any other propagator in the kingdom.

The principle of this system is very easily comprehended; but success depends on many niceties of manipulation, and much experience in judging whether the fish, both male and female, are in the proper condition for operating upon.

This experience is not gained without much practice. This practice Ramsbottom has in great perfection. There is no doubt the artificial breeding of fish will be found exceedingly beneficial, if properly carried out; and I hope to see the time when Salmo Salar may catch half-a-dozen of his namesakes at Whitewell, any good day in the season.

I am, Sir, Yours very truly, THOMAS GARNETT.

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ARTIFICIAL BREEDING OF FISH--(CONTINUED).

CLITHEROE, 9th January, 1854.

To the Editor of the "Manchester Guardian."

SIR,--As I believe that Salmo Salar is quite as desirous of increasing the breed of Salmon as myself, the controversy between us may be reduced to very narrow limits. He believes that Trout eat very few of the Salmon ova, and therefore cannot do much harm. I will just mention a few facts which make me think otherwise. When Ramsbottom was in Galway he caught in one night twenty-five Trout on the spawning ground, which had on the average not less than five hundred ova in each of their stomachs; from one of their throats he squeezed a thousand. As the net would not take a fish of less than two pounds, how many had passed through it? When he was at Knowlmere, in sweeping the river for spawning fish he caught nine Par, two Trouts, and a Sprod on the spawning bed, all of which were gorged with Salmon spawn; when he went into the brooks there he never found a pair of Trout spawning without also finding a number of smaller fish behind, some of which he caught, and in all such cases found them gorged with roe up to the throat; the male Trout would occasionally drive them off, but as soon as he returned to the female they were again close in the rear.

In the "Perthshire Courier" of the 22nd December is the following statement: The men employed in taking the breeding fish secured a Whitling on Tuesday about three-quarters of a pound, and as they observed Salmon ova coming out of his mouth he was brought to the office of Mr. Buist for examination; on being opened, upwards of three hundred impregnated Salmon ova were taken from his stomach quite undigested. It may be, therefore, fairly presumed, that this youngster had taken this quantity for his breakfast; if he dined and breakfasted in the same style each day during the breeding season, it is difficult to estimate the expense of his keep. Such is the amount of loss of impregnated roe in one morning from one trifling fish; what must it be throughout the season from the various enemies it has to encounter?

Salmo Salar is facetious about the destruction of the roe by insects, and says, "because an aquatic insect will devour a minnow's egg, which is not as large as a pin's head, we have no right to infer that it will devour that of a Salmon, which is as large as a pea; it would be just as reasonable to suppose that because a wasp feasts upon a cherry, or a strawberry, therefore he will eat a turnip or a mangold wurtzel." As he seems to have made a slip of the pen in naming the two last fruits, allow me to supply what I suppose he meant to say, which I presume was that because a wasp eats a cherry or a strawberry, we must not therefore infer that he will either eat a pear or a plum; if that is his meaning, I think I can understand it. If he adheres to his own version, I would merely observe that there is no analogy in the two cases. But the inference does not rest upon mere supposition; the freshwater shrimps at Knowlmere were seen devouring the ova in the spawning-boxes. We have seen above that Par eat ova as well as Trout. Let us suppose that the millions of Smolts (as Par) have only one meal each of Salmon roe, and we will stint them to twenty ova apiece. I fear that very few of the five millions which Salmo Salar says are deposited in the Hodder will be left to grow into Salmon. In addition to these, ducks, both wild and tame, eat them greedily. When Ramsbottom was in Galway he saw that the tame ducks frequented the spawning ford, and the superintendent bought one, and found its crop quite full of Salmon roe. If this had been buried eighteen inches in the gravel (as Salmo Salar suggests), the duck would have had some difficulty in extracting it; but so far as my experience goes, it is not usually one-half that depth, although this varies in different rivers. Then, if one Salmon is able to plough up gravel which is cemented together by sand and long continuance in one place, why should not another be able to do the same when the gravel is loose and easily removed? But there is another enemy whom Salmo Salar has not mentioned, who does more harm than all the rest: that is the poacher, and I fear that many of the Salmon which Salmo Salar saw spawning in the Hodder and its tributaries have since then made a journey overland. At all events, I am credibly informed that in one season a gang of poachers took seventy Salmon in the Hodder. Is he sure they have taken none this season? Salmo Salar seems to think that one pair of Salmon will not spawn on the same ground, which has been previously occupied by another pair; but he has only to watch the same ridd for a week or two to be convinced he is mistaken. As to fish refusing to spawn on new gravel, I may state that when Mr. Fawkes was making his experiments at Farnley he put some new gravel into his brook, and there were sixteen pairs of Trout spawning on it the next morning. Salmo Salar says that if he can have those simple checks which he enumerates to the present practices, he will restore abundance of Salmon to the Ribble; they are all very good in their way, but do not go quite far enough, and they would do very little good without a fourth, namely, protection from the poacher for the fish on the spawning beds. Until this can be given more efficiently than it is at present, all the rest will be unavailing; and until the upper proprietors can have a greater interest in the preservation of Salmon than they now have, they cannot be expected to give themselves much trouble on the subject.

My readers would not be much edified by strong assertion and counter-assertion of what Trout do, and what they cannot do; nor is it probable that where we differ we should convince each other; neither do I see any occasion for personality, when both parties are actuated by the same motives--a desire to see the Salmon fisheries restored to a state of great prosperity. I therefore avoid noticing some of Salmo Salar's remarks, which seem to me a little tinged with this spirit, and hope we shall be able to act in concert for the attainment of that desirable result. Salmo Salar will find that the number of Smolts is not always determined by the quantity of ova deposited: if he will examine the bed of the Hodder the next low water, he will find many of the ridds disturbed by the ice floods of yesterday; and if he doubts this, I shall be happy to examine them along with him, if he will give me previous notice of his intention.

Since the above was written I have seen Ramsbottom, who tells me that the stream in the Tay, where he caught the whole of the fish from which he obtained 300,000 to 400,000 ova, was on one side of it one continuous ridd, and that the fish could not avoid ploughing up the gravel which previous fish had spawned in, and at Oughterard, where 300 pairs of fish spawned in the same number of yards, it was the same; and they found thousands of ova buried so deep that they were rotting in great quantities.