Sudden death from cold baths and cold drinks has been known for many centuries. Mauriceau mentions death from cold baptism on the head, and Graseccus, Scaliger, Rush, Schenck, and Velschius mention deaths from cold drinks. Aventii, Fabricius Hildanus, the Ephemerides, and Curry relate instances of a fatal issue following the ingestion of cold water by an individual in a superheated condition. Cridland describes a case of sudden insensibility following the drinking of a cold fluid. It is said that Alexander the Great narrowly escaped death from a constrictive spasm, due to the fact that while in a copious sweat he plunged into the river Cydnus. Tissot gives an instance of a man dying at a fountain after a long draught on a hot day. Hippocrates mentions a similar fact, and there are many modern instances.
The ordinary effects of cold on the skin locally and the system generally will not be mentioned here, except to add the remark of Captain Wood that in Greenland, among his party, could be seen ulcerations, blisters, and other painful lesions of the skin. In Siberia the Russian soldiers cover their noses and ears with greased paper to protect them against the cold. The Laplanders and Samoiedes, to avoid the dermal lesions caused by cold (possibly augmented by the friction of the wind and beating of snow), anoint their skins with rancid fish oil, and are able to endure temperatures as low as -40 degrees F. In the retreat of the 10,000 Xenophon ordered all his soldiers to grease the parts exposed to the air.
Effects of Working in Compressed Air.—According to a writer in Cassier's Magazine, the highest working pressures recorded have been close to 50 pounds per square inch, but with extreme care in the selection of men, and corresponding care on the part of the men, it is very probable that this limit may be considerably exceeded. Under average conditions the top limit may be placed at about 45 pounds, the time of working, according to conditions, varying from four to six hours per shift. In the cases in which higher pressures might be used, the shifts for the men should be restricted to two of two hours each, separated by a considerable interval. As an example of heavy pressure work under favorable conditions as to ventilation, without very bad effects on the men, Messrs. Sooysmith & Company had an experience with a work on which men were engaged in six-hour shifts, separated into two parts by half-hour intervals for lunch. This work was excavation in open, seamy rock, carried on for several weeks under about 45 pounds pressure. The character of the material through which the caisson is being sunk or upon which it may be resting at any time bears quite largely upon the ability of the men to stand the pressure necessary to hold back the water at that point. If the material be so porous as to permit a considerable leakage of air through it, there will naturally result a continuous change of air in the working chamber, and a corresponding relief of the men from the deleterious effects which are nearly always produced by over-used air.
From Strasburg in 1861 Bucuoy reports that during the building of a bridge at Kehl laborers had to work in compressed air, and it was found that the respirations lost their regularity; there were sometimes intense pains in the ears, which after a while ceased. It required a great effort to speak at 2 1/2 atmospheres, and it was impossible to whistle. Perspiration was very profuse. Those who had to work a long time lost their appetites, became emaciated, and congestion of the lung and brain was observed. The movements of the limbs were easier than in normal air, though afterward muscular and rheumatic pains were often observed.
The peculiar and extraordinary development of the remaining special senses when one of the number is lost has always been a matter of great interest. Deaf people have always been remarkable for their acuteness of vision, touch, and smell. Blind persons, again, almost invariably have the sense of hearing, touch, and what might be called the senses of location and temperature exquisitely developed. This substitution of the senses is but; an example of the great law of compensation which we find throughout nature.
Jonston quotes a case in the seventeenth century of a blind man who, it is said, could tell black from white by touch alone; several other instances are mentioned in a chapter entitled "De compensatione naturae monstris facta." It must, however, be held impossible that blind people can thus distinguish colors in any proper sense of the words. Different colored yarns, for example, may have other differences of texture, etc., that would be manifest to the sense of touch. We know of one case in which the different colors were accurately distinguished by a blind girl, but only when located in customary and definite positions. Le Cat speaks of a blind organist, a native of Holland, who still played the organ as well as ever. He could distinguish money by touch, and it is also said that he made himself familiar with colors. He was fond of playing cards, but became such a dangerous opponent, because in shuffling he could tell what cards and hands had been dealt, that he was never allowed to handle any but his own cards.
It is not only in those who are congenitally deficient in any of the senses that the remarkable examples of compensation are seen, but sometimes late in life these are developed. The celebrated sculptor, Daniel de Volterre, became blind after he had obtained fame, and notwithstanding the deprivation of his chief sense he could, by touch alone, make a statue in clay after a model. Le Cat also mentions a woman, perfectly deaf, who without any instruction had learned to comprehend anything said to her by the movements of the lips alone. It was not necessary to articulate any sound, but only to give the labial movements. When tried in a foreign language she was at a loss to understand a single word.
Since the establishment of the modern high standard of blind asylums and deaf-and-dumb institutions, where so many ingenious methods have been developed and are practiced in the education of their inmates, feats which were formerly considered marvelous are within the reach of all those under tuition To-day, those born deaf-mutes are taught to speak and to understand by the movements of the lips alone, and the blind read, become expert workmen, musicians, and even draughtsmen. D. D. Wood of Philadelphia, although one of the finest organists in the country, has been totally blind for years. It is said that he acquires new compositions with almost as great facility as one not afflicted with his infirmity. "Blind Tom," a semi-idiot and blind negro achieved world-wide notoriety by his skill upon the piano.
In some extraordinary cases in which both sight and hearing, and sometimes even taste and smell, are wanting, the individuals in a most wonderful way have developed the sense of touch to such a degree that it almost replaces the absent senses. The extent of this compensation is most beautifully illustrated in the cases of Laura Bridgman and Helen Keller. No better examples could be found of the compensatory ability of differentiated organs to replace absent or disabled ones.
Laura Dewey Bridgman was born December 21, 1829, at Hanover, N.H. Her parents were farmers and healthy people. They were of average height, regular habits, slender build, and of rather nervous dispositions. Laura inherited the physical characteristics of her mother. In her infancy she was subject to convulsions, but at twenty months had improved, and at this time had learned to speak several words. At the age of two years, in common with two of the other children of the family, she had an attack of severe scarlet fever. Her sisters died, and she only recovered after both eyes and ears had suppurated; taste and smell were also markedly impaired. Sight in the left eye was entirely abolished, but she had some sensation for large, bright objects in the right eye up to her eighth year; after that time she became totally blind. After her recovery it was two years before she could sit up all day, and not until she was five years old had she entirely regained her strength. Hearing being lost, she naturally never developed any speech; however, she was taught to sew, knit, braid, and perform several other minor household duties. In 1837 Dr. S. W. Howe, the Director of the Massachusetts Asylum for the Blind, took Laura in charge, and with her commenced the ordinary deaf-mute education. At this time she was seven years and ten months old. Two years later she had made such wonderful progress and shown such ability to learn that, notwithstanding her infirmities, she surpassed any of the pupils of her class. Her advancement was particularly noticed immediately after her realization that an idea could be expressed by a succession of raised letters. In fact, so rapid was her progress, that it was deemed advisable by the authorities to hold her back. By her peculiar sensibility to vibration she could distinguish the difference between a whole and a half note in music, and she struck the notes on the piano quite correctly. During the first years of her education she could not smell at all, but later she could locate the kitchen by this sense. Taste had developed to such an extent that at this time she could distinguish the different degrees of acidity. The sense of touch, however, was exceedingly delicate and acute. As to her moral habits, cleanliness was the most marked. The slightest dirt or rent in her clothes caused her much embarrassment and shame, and her sense of order, neatness, and propriety was remarkable. She seemed quite at home and enjoyed the society of her own sex, but was uncomfortable and distant in the society of males. She quickly comprehended the intellectual capacity of those with whom she was associated, and soon showed an affiliation for the more intelligent of her friends. She was quite jealous of any extra attention shown to her fellow scholars, possibly arising from the fact that she had always been a favorite. She cried only from grief, and partially ameliorated bodily pain by jumping and by other excessive muscular movements. Like most mutes, she articulated a number of noises,—50 or more, all monosyllabic; she laughed heartily, and was quite noisy in her play. At this time it was thought that she had been heard to utter the words doctor, pin, ship, and others. She attached great importance to orientation, and seemed quite ill at ease in finding her way about when not absolutely sure of directions. She was always timid in the presence of animals, and by no persuasion could she be induced to caress a domestic animal. In common with most maidens, at sixteen she became more sedate, reserved and thoughtful; at twenty she had finished her education. In 1878 she was seen by G. Stanley Hall, who found that she located the approach and departure of people through sensation in her feet, and seemed to have substituted the cutaneous sense of vibration for that of hearing. At this time she could distinguish the odors of various fragrant flowers and had greater susceptibility to taste, particularly to sweet and salty substances. She had written a journal for ten years, and had also composed three autobiographic sketches, was the authoress of several poems, and some remarkably clever letters. She died at the Perkins Institute, May 24, 1889, after a life of sixty years, burdened with infirmities such as few ever endure, and which, by her superior development of the remnants of the original senses left her, she had overcome in a degree nothing less than marvelous. According to a well-known observer, in speaking of her mental development, although she was eccentric she was not defective. She necessarily lacked certain data of thought, but even this feet was not very marked, and was almost counterbalanced by her exceptional power of using what remained.