Part 54

WHEN RATTLESNAKES KILL

Thirteen cases of death following rattlesnake and copperhead bite in which satisfactory clinical data were obtainable, are given by Prentiss Willson. Of the victims, five were young children, one was a fourteen-year-old boy, one a chronic drunkard, and one a leper who submitted to the stroke of a captive rattlesnake in the mad hope that it would cure his affliction. It did--in twenty-four hours. Of the remaining five, three were dosed with alcohol in large quantities. In several of the cases, notably those of the children, there seemed to be at least an even chance of recovery, when the ligatures binding the affected limb were loosened to relieve the pain, with quickly fatal results. Two of the fatalities were attributed, not immediately to the venom, but to the secondary blood-poisoning, this being the case with the only copperhead bite in the list.

Death resulting typically from crotaline poisoning occurred in two instances, one the fourteen-year-old boy, who was struck by a large rattlesnake and died in six hours, despite skilled and prompt medical attendance; the other, a Dr. Post, into whose veins, it would appear, the poison entered immediately, since a jet of blood spurted from the wound inflicted by the captive rattlesnake. The man passed from great agony into coma, from which he never rallied, death ensuing in five hours after the bite. There is nothing in these data to indicate that a full-grown man in normal health, and with proper treatment, will succumb to crotaline poisoning unless the venom enters a vein, direct.

In the matter of the comparative potency of snake poisons, there are apparent contradictions. In the order of recorded fatalities, the rattlesnake ranks easily first, with the water moccasin a rather distant second, and the copperhead a very poor third. Yet experiments upon animals indicate that moccasin venom is five times as powerful as rattlesnake, though only three times as powerful as copperhead. Taking the cobra as the basis of estimate, it requires only twice as much moccasin venom as it does cobra poison to kill a guinea pig, whereas it requires six times as much copperhead and ten times as much rattlesnake virus. Why, then, is the rattler pre-eminent over its more virulent cousins? Probably for two reasons--the greater amount of venom secreted, and the superior power with which the rattler drives its fangs home.

NO VIPERS IN THIS COUNTRY

Fully as much terror attaches, in the country districts, to the puff adder or sand viper as to the rattlesnake or copperhead. This is a suggestive bit of superstition, since there's no such thing as an adder or viper on the Western hemisphere and never has been one, unless it came, carefully pickled, in a jar. What passes for the supposedly deadly reptile is the common hog-nosed or bull snake. It is about as dangerous as an infuriated rabbit. But it puts up one of the best "bluffs" known to natural history. When caught at its favorite occupation of basking in the open, without convenient avenue of escape, it flattens its head, and strikes right and left, blowing and hissing with an aspect much more terrifying than that of the truly venomous species. Then, when the objects of its fury have taken to trees or adjacent fences, it glides quietly away into the grass and effaces itself. Any one who has the nerve to look it between the eyes may uncover its pretense. For by this token may be known the real Crotalids from the mock: a small but distinct pit between eye and nostril. Lacking this mark, no ventral crawler in the land of the free need cause a flutter in the most timid breast, with one notable exception.

BEWARE THE ELAPS

Shun, as you would a rabid dog, a pretty little red-and-black banded serpent about as thick as your thumb. If any living creature whose habitat is the United States deserves the epithet "deadly," it is the Elaps. Two species are known; the harlequin snake, which ranges throughout the Gulf states to Texas and up the Mississippi River to Ohio, and the Sonoran coral snake, found in the Southwest only. By a strange perversion of facts, while the harmless hog-nosed snake enjoys a repute of terror, the Elaps, most dangerous of all American reptiles, is commonly regarded as harmless. Partly this is due to its slight and graceful prettiness, partly to its innocent-appearing head, which shows no flattening (the popularly understood mark of the venomous species), and partly to its lethargic and peaceful disposition. Experimenters wishing to secure the venom of the Elaps often find it difficult to rouse the snake to striking wrath.

Very few instances are known of Elaps bite, but those few unquestionably set this ornamental creature in a class by itself, among American Ophidia, for "results." Out of eight well-authenticated cases of Elaps bite, six of the victims died. This is believed to indicate a falsely large percentage, however, the scientific estimate of mortality being somewhere between twenty-five and fifty per cent.

A government scientist tells me of a curious result from coral-snake bite which came under his notice. The victim, who was handling the reptile preparatory to photographing it, apparently overstepped the bounds of its habitual forbearance, for it fastened upon his finger with such determination that it had to be pried off. The man soon became unconscious, but rallied, and, after three days of dubious condition, recovered. Every year since, at about the anniversary of the bite, an ulcer forms upon the finger and the nail sloughs off. I have heard of similar recurrent effects from crotaline poisoning, but none scientifically attested, as is this phenomenon.

Before passing from the subject of snakes, let me make one point clear. While the venomous snakes of this country are by no means "deadly" in the ordinary sense of the term, their bite is always serious, both in its immediate effects and in the possibility of after effects. The bitten person should get to a physician at once. The immediate treatment is prompt incision and sucking of the wound. Permanganate of potash for rubbing into the bitten place should always be carried by persons traveling in a snake-infested country. If the bite is on a limb, a light ligature will check the spread of the venom. Use whisky sparingly, if at all, and then only in case of complete collapse.

The local treatments are most effective while the venom is still around the site of the bite, and will reduce the injurious effects considerably. But after half an hour or so the absorption of the venom becomes more general and the local treatments ineffective. When the venom once enters into general circulation no chemicals or medication can neutralize its effects, except a specific antivenin, such as has been prepared by Dr. Noguchi at the Rockefeller Institute in New York. Antivenin is the only antidote that can counteract the action of venom anywhere in the body. It finds the venom wherever it is present and neutralizes it there, without producing any ill effects on the system.

GILA MONSTER NOT SO MONSTROUS

Dissension and discussion have raged for years about the hideous head of the Gila monster. This great lizard of the Southwest has been pronounced absolutely deadly by one set of partisans, and absolutely harmless by another. Somewhere between lies the truth. If any human being has actually been bitten by a heloderma, the event has either escaped notice or has been so hedged about with obstructive legend as to have forfeited scientific credence. But the saurian itself has been studied and dissected, and its venom has been analyzed. The venom is related to snake poison, but is neither crotaline nor elapine. From animal experiments it is thought that it might be fatal to man under unfavorable conditions. There are no fangs proper. The poison gland is in the lower jaw, instead of in the upper, as in snakes, and its product is projected through small ducts which open in the gums outside the teeth. The Gila monster has the grip of a bulldog. Torture will not loosen its hold, once fastened on. It is through this intimate contact that the venom works into the wounds.

Fortunately, the lizard is slow to anger, and prefers flight to battle, so it is likely to be long before science has an opportunity of studying the effect of its envenomed jaw-clamp upon man. There are a few vaguely rumored reports of prospectors having perished, in the desert, of Gila monster poison, but these are so confused with symptoms suspiciously resembling alcoholic poisoning as to lead Dr. R. W. Shufeldt, an authority upon the Reptilia, to remark that "a quart of raw whisky, practically given at one dose, may prove more fatal than the bite of ten helodermas."

Almost any kind of an insect bite or sting MAY prove fatal. So may a pin scratch, if the blood of the subject be in bad enough condition. There is a well-substantiated case of a trained nurse who died from blood poisoning following a mosquito bite. Ant bite has resulted fatally, as has a single sting from the common wasp. No one, however, considers these everyday insects as "deadly." But substitute "scorpion" for "ant," and "centipede" for "wasp," and shrieks of dismay rise from the general throat. Yet perhaps there is no other variety of harmful creature whose reputation rests upon so meager a foundation as that of these two.

True, an El Paso report claims that a man stung by a whip scorpion died in twelve hours; but the details are so vague as to be in a high degree unconvincing. Dr. Eugene Murray-Aaron, a witness of unimpeachable scientific competency, describes the sting, after several personal encounters with the vigorous tropical species, as no worse than that of a large hornet. Dr. L. B. Rowland, of Florida, says: "My wife has been stung several times [by the common scorpion]. It is like a wasp sting, only."

THE SCORPION'S STING

The Mexican scorpion enjoys an evil repute, which, from personal observation, I consider greatly exaggerated. Stewart Edward White was so obliging as to afford me excellent opportunity of judging, in the course of a recent hunting trip which we took together in a hot and remote Mexican desert. Mr. White, in the process of disrobing, sat down upon a brown scorpion, an inch and a half long. The scorpion punctured Mr. White twice. I noted his symptoms. They were chiefly surprise and indignation. Within half an hour he was asleep, and on the following day he was riding a mule. The scorpion, however, died.

With respect to the centipede, satisfactory data are difficult to obtain. Some scientists whose observations are worthy of note state that the legs of this curious creature secrete a poison, and that their trail over human flesh is marked by a sort of rash, sometimes followed by fever. As showing that this is not an invariable phenomenon, I may set the circumstantial account given me by Captain Robert Kemp Wright, who, at his place at Pitch Lake, Trinidad, saw a good-sized centipede crawl across the forehead of his sleeping son. Not daring to make a move, as the centipede is supposed to strike very swiftly, Captain Wright was compelled to stand still while it slowly made its way to the pillow and thence to the floor, where it was killed. The boy, who had neither waked nor moved, showed absolutely no trace of the reptile's course.

THE DEADLY TARANTULA--IN PRINT

The only direct evidence which has come to me regarding the bite of the hundred-legged crawler was from an English naturalist whom I met in Venezuela. He was bitten on the ankle by a centipede nearly a foot long. So severe was the laceration that his sock was clotted with blood before he could get it off. The two punctures were marked. Almost immediately the ankle began to swell. The pain he describes as being equal to a bad toothache. It kept him awake all that night. He had some fever, which, however, he attributes rather to the loss of sleep than to any specific action of the poison, as there were no other general symptoms. In the morning the pain had abated a good deal, and he believes that he could have gone about his pursuits had he been able to get his sock and shoe on. He noted some discoloration about the wound. Late in the afternoon he was hobbling about. A week in a carpet slipper was the extent of disability which he suffered. On these evidences it would seem just, for the present, to set down the scorpion and the centipede as painful, rather than dangerous, assailants.

Diseased imagination could invent no creature more horrific of appearance than the tarantula. Its bristling and hostile aspect, the swift ferocity of its rush, its great size, and its enthusiastic preference for combat as against flight, are sufficient to account for the fear and respect in which it is generally held. But, though several species of the huge spider are native to the United States, and others frequently drop out of banana bunches from South or Central America, to the discomfiture of the unsuspecting grocer, no authentic instance of death from tarantula poison in this country is obtainable. St. Louis papers please copy, particularly that one which, several years ago, announced in appropriately black headlines:

IN TWO WEEKS Three Men Have Died From Bites of Tarantulas,

proceeding to explain that the victims were banana handlers in the wholesale fruit district. No names were supplied--a common phenomenon in this class of obituary notice. Search in the coroner's records failed to bring to light any case of the sort, and an exhaustive inquiry in the fruit district was equally unproductive. The report was a pure fake.

Apparently of the same nature is the "news story" of a Californian who, presumably mistaking a tarantula for a fragrant floweret, was bitten on the nose and "died in great agony." That, of course, is the proper way to die under such circumstances. They all do it--in print.

Now let us see about the "agony." Herbert H. Smith, the naturalist and collector, saw a man bitten on the bare foot by a tarantula (Mygale) so hard as to draw blood. There was very little swelling, and the man paid no heed to the occurrence, but went on with his work.

I have talked with a Southern Pacific Railroad fireman who was jabbed on the wrist by a large tarantula. Some years before, he had been stung on the cheek by a "bald" hornet. He wasn't inclined to make any choice between the two except that the tarantula (not the wound) "looked a d----sight more scary." He didn't let the bite interfere with his job, even for the day.