Mr. Hunter supposed that when death is thus occasioned, there is an instantaneous and entire annihilation of the vital principle, in every part of the animal machine; and that the muscles are therefore relaxed, and incapable of contraction, that the limbs do not stiffen[[54]], as in other cases of death, nor the blood coagulate, and that the body very speedily runs into a state of putrefaction. The experiments however of Mr. Brodie[[55]] will induce us to pause, and institute farther enquiries before we receive this theory as unexceptionable. It will appear that in the following experiments of this physiologist, an instantaneous extinction of vitality did not take place, but, on the contrary, the functions of the brain were those on which the electric shock exercised its primary influence. An electric battery of six jars having been charged with electricity, the shock was made to pass through a Guinea pig, in the longitudinal direction from the head to the tail: the animal immediately fell on one side, insensible, as if stunned; a convulsive action of the muscles of the extremities was observed, but did not long continue; and the function of respiration was not interrupted. In a few minutes sensibility was restored, and the animal recovered. A shock from a battery of nine jars was then passed in the same manner through another Guinea pig; the animal immediately fell on its side, exhibited a convulsive action of the voluntary muscles of the limbs, but uttered no cries, and although attentively watched, no signs of respiration could be discovered after the shock had passed through it. Three minutes afterwards, Mr. Brodie opened the chest, and found the heart acting with regularity and vigour, about 80 times in a minute, and circulating dark coloured venous blood; the peristaltic motion of the intestines was likewise visible; and the muscles, when made the part of a galvanic circuit, readily contracted. In this experiment, observes Mr. Brodie, it is evident that the electric shock did not destroy the irritability of the muscular fibre, nor did it affect the action of the heart. Death took place precisely in the same manner as from a severe injury of the head; and the animal died, manifestly from the destruction of the functions of the brain; and, in this case, Mr. Brodie has no doubt, but that if the lungs had been artificially inflated, the action of the heart might have been maintained, and the animal probably have been restored to life.
The nature and extent of the injury inflicted by lightning, depend upon the intensity and direction of the electrical discharge, and vary greatly in degree; by far the greater number of flashes are harmless discharges from one cloud to another, and the instances in which it strikes the earth are comparatively rare: when however this does occur, and it directs its course through a human being, it may expend its influence upon the surface, and produce partial or general vesications.[[56]] Sometimes the clothes of the person have been violently rent, and the metallic substances about them melted; or it may pass through the body, without including the clothes, and it may occasion death without injuring the organic structure of any part of the body: or it may pass through only a particular portion of the body, and produce local injury.
But it has happened that persons have been struck when the tempest has appeared to be at a considerable distance; this has been explained by Signor Beccaria, by supposing that it is a discharge of electric fluid from the earth, occasioned by the passing of a cloud that has just before, in the elemental strife, been rendered negatively electric. Lord Stanhope distinguishes such a discharge by the name of the Returning Stroke.[[57]]
As a provision for personal security during a thunder storm, a few precautions are necessary, and we are induced to notice them in this place, as their history is necessarily involved in our enquiries concerning death by lightning. In the open air, shelter ought not to be sought immediately under trees, for should they be struck, such a situation would be attended with the most imminent peril: on the contrary, the distance of twenty or thirty feet from such objects, may be considered as affording a place of safety, for should a discharge take place, they will most likely receive it, and the less elevated bodies will escape. Any surface of water, and even the streamlets that may have resulted from a recent shower should be avoided, for being excellent conductors, the height of a man, when connected with them, is very likely to determine the course of an electrical discharge. The partial conductors, through which the lightning directs its course when it enters a building, are usually the appendages of the walls and partitions; the most secure situation is therefore the middle of the room, and this situation may be rendered still more secure by lying on a hair mattress, or even on a thick woollen hearth rug. The part of every building least likely to receive injury is the middle story, as the lightning does not always pass from the clouds to the earth, but is occasionally discharged from the earth to the clouds, as in the case of the “returning stroke;” hence it is absurd to take refuge in a cellar, as recommended by Dr. Priestley; indeed many instances are on record, in which the basement story has been the only part of a building that has sustained severe injury, the electric charge being divided and weakened as it ascended. Any approach to a fire-place should be particularly avoided, for the chimneys are very likely to determine the course of the lightning; the same caution is necessary with respect to gilt furniture, bell-wires, and moderately extensive surfaces of metal of every description.
DEATH BY STARVATION.
That a living animal body cannot long survive without the ingestion of alimentary matter, is too self-evident to require demonstration. Living bodies, says Cuvier, may be considered as a kind of furnaces into which inert substances are successively thrown, which combine among themselves in various manners, maintain a certain place, and perform an action determined by the nature of the combinations they have formed, and at last fly off in order to become again subject to the laws of inanimate nature.
It must, however, be observed, that there is a difference, depending on age and health, in the proportion of the parts which enter into the current, and those which abandon it; and that the velocity of the motion usually varies according to the different conditions of each living body; hence it follows, that the period during which an individual may exist without food, will be liable to variation. We have already stated (page [394]) that, cæteris paribus, he will perish from inanition with a rapidity proportioned to his youth, and state of robust vigour; and we remarked in what strict conformity with physiological principles the poet Dante had described the fate of Ugolino and his family.[[58]] The same fact appears also to have been well understood by the ancient physicians;[[59]] equally evident is it that women are able to support abstinence longer than men. It has been also observed that a moist atmosphere contributes to the protraction of life, under circumstances of privation; this may depend, not only upon the fluid matter thus furnished to the body, but upon the non-conducting power of the medium, in relation to aqueous vapour; the ingestion of a very small proportion of water revives in an extraordinary degree, the animal perishing from famine, and prolongs his existence. Redi[[60]] instituted a series of experiments with the sole view of ascertaining how long animals can live without food. Of a number of capons which he kept without either solid or liquid food, not one survived the ninth day; but one to which he allowed water, drank it with avidity, and did not perish until the twentieth day. Elizabeth Woodcock, who was buried under the snow, near Cambridge, for the space of eight days, undoubtedly owed her preservation to the snow which she occasionally sucked.[[61]]
Those cases of extraordinary fasting, which are recorded in the different Transactions and Journals of almost every country, are to be generally regarded as gross impositions; we[[62]] have already exposed the fallacy of several of the more popular histories of this kind. Such impostors, however, in their attempt to delude the world, have unintentionally offered themselves as the voluntary victims of physiological experiment; for we have at least learnt from them how small a portion of aliment is sufficient to preserve the life of a human being; a fact which had never before been satisfactorily proved, however probable it had been rendered, by the recorded habits of many of the early Christians, especially those of the East, who retired from persecution into the deserts of Arabia and Egypt.
The sufferings of a person perishing from inanition[[63]] must be considered as the most acute that can befall humanity; and yet we have instances on record of their having been voluntarily encountered as the means of suicide; a very interesting and well-authenticated instance of this kind has been related as having occurred in Corsica;[[64]] and, as it is calculated to afford, at once, a history of the symptoms of Starvation, and an exemplification of their severity, we shall introduce a brief account of the case in this place. Luc Antoine Viterbi was condemned to death as an accomplice in the assassination of Frediani, a crime which he denied to the last moment, and appealed against a sentence passed upon him by a Court composed of his personal enemies. Towards the end of November, Viterbi (knowing his condemnation, and being confined in the prison of Bastia), resolved to die. To effect his purpose, he abstained from food for three days, and then ate voraciously, and to a forced excess, in the hope that, after fasting so long, he should thereby put an end to his existence; in this however he was deceived, and, on the second of December, he determined to starve himself to death; from that day nothing could shake his awful resolution, although he did not expire until the night of the 21st of that month. During the three first days, Viterbi felt himself progressively tormented by hunger; under these circumstances a report was made to the public minister, who ordered bread, water, wine, and soup to be taken daily to his cell, and placed conspicuously in view. No debility was manifested during these three days, no irregular muscular movement was remarked, his ideas continued sound, and he wrote with his usual facility, but took no nourishment.
From the 5th to the 6th, to hunger insensibly succeeded the much more grievous suffering of thirst, which became so acute, that on the 6th, without ever deviating from his resolution, he began to moisten his lips and mouth occasionally, and to gargle with a few drops of water, to relieve the burning pain in his throat; but he let nothing pass the organs of deglutition, being desirous not to assuage the most insupportable cravings, but to mitigate a pain which might have shaken his resolution. On the 6th, his physical powers were a little weakened; his voice was nevertheless still sonorous, pulsation regular, and a natural heat equally extended over his whole frame. From the 3d to the 6th, he had continued to write; at night several hours of tranquil sleep seemed to suspend the progress of his sufferings, no change was observable in his mental faculties, and he complained of no local pain. Until the 10th, the thirst became more and more insupportable; Viterbi merely continued to gargle, without once swallowing a single drop of water; but in the course of the 10th, overcome by excess of pain, he seized the jug of water, which was near him, and drank immoderately. During the last three days, debility had made sensible progress, his voice became feeble, pulsation had declined, and the extremities were cold. Viterbi, however, continued to write; and sleep, each night, still afforded him several hours ease.