Part 25

Gold Fish (of the Carp family) have been made to distinguish a particular sound made by those from whom they receive their food; they recognise their footsteps at a distance, and come at their call. Captain Brown says Gold Fish, when kept in ponds, are "frequently taught to rise to the surface of the water at the sound of a bell to be fed;" and Mr. Jesse was assured that Gold Fish evince much pleasure on being whistled to. Hakewill, in his "Apology for God's Power and Providence," cites Pliny to show that a certain emperor had ponds containing fish, which, when called by their respective names that were bestowed upon them, came to the spot whence the voice proceeded. Bernier, in his "History of Hindustan," states a like circumstance of the fish belonging to the Great Mogul. The old poet, Martial, also mentions fish coming at the call, as will be seen by the following translation from one of his epigrams:--

"Angler! could'st thou be guiltless? Then forbear: For these are sacred fishes that swim here; Who know their Sovereign, and will lick his hand. Than which none's greater in the world's command; Nay, more; they've names, and when they called are. Do to their several owners' call repair."

Who, after reading so many instances, can doubt that fish hear?

It has been found that the water from steam-engines, which is thrown into dams or ponds for the purpose of being cooled, conduces much to the nutriment of Gold Fish. In these dams, the average temperature of which is about eighty degrees, it is common to keep Gold Fish; in which situation they multiply much more rapidly than in ponds of lower temperature exposed to variations of the climate. Three pair of fish were put into one of these dams, where they increased so rapidly that at the end of three years their progeny, which was accidentally poisoned by verdigris mixed with the refuse tallow from the engine, were taken out by wheel-barrow-fuls. Gold Fish are by no means useless inhabitants of these dams, as they consume the refuse grease which would otherwise impede the cooling of the water by accumulating on its surface. It is not improbable that this unusual supply of aliment may co-operate with increase of temperature in promoting the fecundity of the fishes.

Most of our readers have heard of the fish popularly known as the Miller's Thumb, the origin of the name of which Mr. Yarrell has thus explained:--"It is well known that all the science and tact of a miller is directed so to regulate the machinery of his mill that the meal produced shall be of the most valuable description that the operation of grinding will permit, when performed under the most advantageous circumstances. His ear is constantly directed to the note made by the running stone in its circular course over the bedstone, the exact parallelism of their two surfaces, indicated by a particular sound, being a matter of the first consequence; and his hand is constantly placed under the meal-spout to ascertain, by actual contact, the character and quality of the meal produced, which he does by a particular movement of his thumb in spreading the sample over his fingers. By this incessant action of the miller's thumb, a peculiarity in its shape is produced, which is said to resemble exactly the shape of the river bull-head, a fish constantly found in the mill-stream, and which has obtained for it the name of the Miller's Thumb."

M. Coste has constructed a kind of marine observatory at Concarneau (Finisterre) for the purpose of studying the habits and instincts of various Sea-fish. A terrace has been formed on the top of a house on the quay, with reservoirs arranged like a flight of steps. The sea-water is pumped up to the topmost reservoir, and thence flows down slowly, after the manner of a rivulet. The length is divided into 95 cells by wire net partitions, which, allowing free passage to the water, yet prevent the different species of fish from mingling together. By this ingenious contrivance each kind lives separate, enjoying its peculiar food and habits, unconscious of its state of captivity. Some species, such as the Mullet, the Stickleback, &c., grow perfectly tame, will follow the hand that offers them food, and will even allow themselves to be taken out of the water. The Goby and Bull-head are less familiar. The Turbot, which looks so unintelligent, will, nevertheless, take food from the hand; it changes colour when irritated, the spots with which it is covered growing pale or dark, according to the emotions excited in it. But the most curious circumstance concerning it is, that it swallows fish of a much larger size than would appear compatible with the apparent smallness of its mouth. Thus, a young Turbot, not more than ten inches in length, has been seen to swallow Pilchards of the largest size. The Pipe-Fish has two peculiarities. These fish form groups, entwining their tails together, and remaining immoveable in a vertical position, with their heads upwards. When food is offered them, they perform a curious evolution--they turn round on their backs to receive it. This is owing to the peculiar position of the mouth, which is placed under a kind of beak, and perpendicular to its axis.

The crustaceous tribes have also furnished much matter of observation. The Prawn and Crab, for instance, exercises the virtue of conjugal fidelity to the highest degree; for the male takes hold of his mate, and never lets her go; he swims with her, crawls about with her, and if she is forcibly taken away from him, he seizes hold of her again. The metamorphoses to which various crustaceous tribes are subject have also been studied with much attention.

Much as the nature and habits of fish have been studied of late years, the economy of some is to this day involved in obscurity. The Herring is one of these fishes. The Swedish Herring Fisheries were, at one time, the largest in Europe, but at present, during the temporary disappearance of the fish, they have dwindled away. The causes which influence the movements of the Herring--one of the most capricious of fish--are a puzzle which naturalists have as yet failed to solve. They are not migratory, as was at one time believed--that is, they seldom wander far from the place where they were bred; but they are influenced by certain hidden and unexplained causes at one time to remain for years in the deep sea, and at another to come close in to land in enormous numbers. During the first half of the sixteenth century, Herrings entirely deserted the Swedish coasts. In 1556 they reappeared, and remained for thirty-one years in the shallow waters. Throughout this period they were taken in incalculable numbers; "thousands of ships came annually from Denmark, Germany, Friesland, Holland, England, and France, to purchase the fish, of which sufficient were always found for them to carry away to their own or other countries.... From the small town of Marstrand alone some two million four hundred thousand bushels were yearly exported." In 1587 the Herrings disappeared, and remained absent for seventy-three years, till 1660. In 1727 they returned, and again in 1747, remaining till 1808, and during this last period the fisheries were prosecuted with extraordinary zeal, industry, and success. The Government gave every encouragement to settlers, and it was computed that during some years as many as fifty thousand strangers took part in them. In 1808 the Herrings once more disappeared, and have never returned since. The cause must still be considered as quite unknown; but we may fairly assume, according to historical precedents, that after a certain period of absence, the Herrings will again return.

Aristotle, in his "History of Animals," makes some extremely curious observations on Fish and Cetaceous Animals, as might be expected from the variety of these animals in the Grecian seas. In Spratt and Forbes's "Travels in Syria" the account of the habits and structure of the Cuttle-fish in Aristotle's work is ranked amongst the most admirable natural history essays ever written. It is, moreover, remarkable for its anticipation.

Dr. Osborne, in 1840, read to the Royal Society a short analysis of this work, in which he showed that Aristotle anticipated Dr. Jenner's researches respecting the cuckoo; as also some discoveries respecting the incubated egg, which were published as new in the above year. Aristotle describes the economy of bees as we have it at present; but mistakes the sex of the queen. The various organs are described as modified throughout the different classes of animals (beginning with man) in nearly the same order as that afterwards adopted by Cuvier.

The chief value of this body of knowledge, which has been buried for above 2,000 years, is, that it is a collection of facts observed under peculiar advantages, such as never since occurred, and that it is at the present day to be consulted for new discoveries.

According to Pliny, for the above work some thousands of men were placed at Aristotle's disposal throughout Greece and Asia, comprising persons connected with hunting and fishing, or who had the care of cattle, fish-ponds, and apiaries, in order that he might obtain information from all quarters, ne quid usquam gentium ignoretur ab eo. According to Athenæus, Aristotle received from the prince, on account of the expenses of the work, 800 talents, or upwards of 79,000l.

FOOTNOTES:

A tench was brought to Mr. Harmer so full of spawn that the skin was burst by a slight knock, and many thousands of the eggs were lost; yet even after this misfortune he found the remainder to amount to 383,252! Of other marine animals, which he includes under the general term fish, the fecundity, though sufficiently great, is by no means enormous. A lobster yielded 7,227 eggs; a prawn 3,806; and a shrimp 3,057. See Mr. Harmer's paper, "Philosophical Transactions," 1767.

"Athenæum."

See "The Tree-climbing Crab," pp. 282-302.

"Saturday Review."

FISH IN BRITISH COLOMBIA.

In this bitterly cold country, where the snow lies deep six months out of the twelve, the natives subsist principally on fish, of which there is an extraordinary abundance generally, and of salmon particularly. Salmon swarm in such numbers that the rivers cannot hold them. In June and July every rivulet, no matter how shallow, is so crammed with salmon that, from sheer want of room, they push one another high and dry upon the pebbles; and Mr. Lord tells us that each salmon, with its head up, struggles, fights, and scuffles for precedence. With one's hands only, or more easily by employing a gaff or a crook-stick, tons of salmon have been procured by the simple process of hooking them out. Once started on their journey, the salmon never turn back. As fast as those in front die, fresh arrivals crowd on to take their places, and share their fate. "It is a strange and novel sight to see three moving lines of fish--the dead and dying in the eddies and slack water along the bank, the living breasting the current in the centre, blindly pressing on to perish like their kindred." For two months this great salmon army proceeds on its way up stream, furnishing a supply of food without which the Indians must perish miserably. The winters are too severe for them to venture out in search of food, even if there was any to be obtained. From being destitute of salt, they are unable to cure meat in the summer for winter provisions, and hence for six months in the year they depend upon salmon, which they preserve by drying in the sun.

But the Indian has another source of provision for the winter, fully as important as the salmon. The Candle-fish supplies him at once with light, butter, and oil. When dried, and perforated with a rush, or strip of cypress-bark, it can be lighted, and burns steadily until consumed. Strung up, and hung for a time in the smoke of a wood fire, it is preserved as a fatty morsel to warm him when pinched with cold; and, by heat and pressure, it is easily converted into liquid oil, and drunk with avidity. That nothing may be wanting, the hollow stalk of the sea-wrack, which at the root is expanded into a complete flask, makes an admirable bottle; and so, when the Indian buries himself for long dreary months in his winter quarters, neither his larder nor his cellar are empty, and he has a lamp to lighten the darkness. The steamers have, however, frightened away the Candle-fish and the Indian from their old haunts, and they have both retreated to the north of the Colombia River.

Amongst the other inhabitants of the salt and fresh waters of these regions are the Halibut and the Sturgeon, both of which attain to an immense size. The bays and inlets along the coast abound with marine wonders. There feasts and fattens the Clam, a bivalve so gigantic that no oyster-knife can force an entrance, and only when his shell is almost red-hot will he be at last constrained to open his dwelling.

And there lies in wait the awful Octopus, a monster of insatiable voracity, of untameable ferocity, and of consummate craft; of sleepless vigilance, shrouded amidst the forest of sea-weed, and from the touch of whose terrible arms no living thing escapes. It attains to an enormous size in those seas, the arms being sometimes five feet in length, and as thick at the base as a man's wrist. No bather would have a chance if he once got within the grasp of such a monster, nor could a canoe resist the strength of its pull; but the Indian, who devours the Octopus with great relish, has all the cunning created by necessity, and takes care that none of the eight sucker-dotted arms ever gain a hold on his frail bark.

Professor Owen has figured a species of Octopus, the Eight-armed Cuttle of the European seas, representing it in the act of creeping on shore, its body being carried vertically in the reverse position, with its head downwards, and its back being turned towards the spectator, upon whom it is supposed to be advancing. This animal is said to be luminous in the dark. Linnæus quotes Bartholinus for the statement that one gave so much light that when the candle was taken away, it illuminated the room.

The Sturgeon is one of the finest fishes of the country, and Mr. Lord's account of the Indian mode of taking them is a very graphic picture of this river sport.

"The spearman stands in the bow, armed with a most formidable spear. The handle, from seventy to eighty feet long, is made of white pine-wood; fitted on the spear-haft is a barbed point, in shape very much like a shuttlecock, supposing each feather represented by a piece of bone, thickly barbed, and very sharp at the end. This is so contrived that it can be easily detached from the long handle by a sharp, dexterous jerk. To this barbed contrivance a long line is made fast, which is carefully coiled away close to the spearman, like a harpoon-line in a whale-boat. The four canoes, alike equipped, are paddled into the centre of the stream, and side by side drift slowly down with the current, each spearman carefully feeling along the bottom with his spear, constant practice having taught the crafty savages to know a Sturgeon's back when the spear comes in contact with it. The spear-head touches the drowsy fish; a sharp plunge, and the redskin sends the notched points through armour and cartilage, deep into the leather-like muscles. A skilful jerk frees the long handle from the barbed end, which remains inextricably fixed in the fish; the handle is thrown aside, the line seized, and the struggle begins. The first impulse is to resist this objectionable intrusion, so the angry Sturgeon comes up to see what it all means. This curiosity is generally repaid by having a second spear sent crashing into him. He then takes a header, seeking safety in flight, and the real excitement commences. With might and main the bowman plies the paddle, and the spearman pays out the line, the canoe flying through the water. The slightest tangle, the least hitch, and over it goes; it becomes, in fact, a sheer trial of paddle versus fin. Twist and turn as the Sturgeon may, all the canoes are with him. He flings himself out of the water, dashes through it, under it, and skims along the surface; but all is in vain, the canoes and their dusky oarsmen follow all his efforts to escape, as a cat follows a mouse. Gradually the Sturgeon grows sulky and tired, obstinately floating on the surface. The savage knows he is not vanquished, but only biding a chance for revenge; so he shortens up the line, and gathers quietly on him to get another spear in. It is done,--and down viciously dives the Sturgeon; but pain and weariness begin to tell, the struggles grow weaker and weaker as life ebbs slowly away, until the mighty armour-plated monarch of the river yields himself a captive to the dusky native in his frail canoe."

There is a very rare Spoonbill Sturgeon found in the western waters of North America: its popular name is Paddle-fish. One, five feet in length, weighed forty pounds; the nose, resembling a spatula, was thirteen inches in length. It was of a light slate colour, spotted with black; belly white; skin smooth, like an eel; the flesh compact and firm, and hard when boiled--not very enticing to the epicure. The jaws are without teeth, but the fauces are lined with several tissues of the most beautiful network, evidently for the purpose of collecting its food from the water by straining, or passing it through these membranes in the same manner as practised by the spermaceti whale. Near the top of the head are two small holes, through which it is possible the Sturgeon may discharge water in the manner practised by cetaceous animals. It is conjectured that the long "Spoonbill" nose of this fish is for digging up or moving the soft mud in the bottom of the river, and when the water is fully saturated, draw it through the filamentory strainers in search of food.

Sturgeons resemble sharks in their general form, but their bodies are defended by bony shields, disposed in longitudinal rows; and their head is also well curiassed externally. The Sturgeons of North America are of little benefit to the natives. A few speared in the summer-time suffice for the temporary support of some Indian hordes; but none are preserved for winter use, and the roe and sounds are utterly wasted.

The northern limit of the Sturgeon in America is probably between the 55th and 56th parallels of latitude. Dr. Richardson did not meet with any account of its existence to the north of Stewart's Lake, on the west side of the Rocky Mountains; and on the east side it does not go higher than the Saskatchewan and its tributaries. It is not found in Churchill River, nor in any of the branches of the Mackenzie or other streams that fall into the Arctic Seas--a remarkable circumstance when we consider that some species swarm in the Asiatic rivers which flow into the Icy Sea. Sturgeons occur in all the great lakes communicating with the St. Lawrence, and also along the whole Atlantic coast of the United States down to Florida. Peculiar species inhabit the Mississippi; it is, therefore, probable that the range of the genus extends to the Gulf of Mexico.