# Works of the late Doctor Benjamin Franklin/On the Art of ſwimming

ON THE ART OF SWIMMING.
IN ANSWER TO SOME ENQUIRIES OF M. DUBOURG ON THE SUBJECT.
I AM apprehenſive that I ſhall not be able to find leiſure for making all the diſquiſitions and experiments which would be deſirable on this ſubject. I muſt, therefore, content myſelf with a few remarks.
The ſpecific gravity of ſome human bodies, in compariſon to that of water has been examined by M. Robinſon, in our philoſophical Tranſactions, volume 50, page 30, for the year 1757. He aſſerts, that fat perſons with ſmall bones float moſt eaſily upon water.
The diving bell is accurately deſcribed in our Tranſactions.
When I was a boy, I made two oval pallets, each about ten inches long, and ſix broad, with a hole for the thumb, in order to retain it faſt in the palm of my hand. They much reſemble a painter's pallets. In ſwimming I puſhed the edges of theſe forward, and I ſtruck the water with their flat ſurfaces as I drew them back. I remember I ſwam faſter by means of theſe pallets, but they fatigued my wriſts.—I alſo fitted to the ſoles of my feet a kind of ſandals; but I was not ſatisfied with them, becauſe I obſerved that the ſtroke is partly given by the inſide of the feet and the ancles, and not entirely with the ſoles of the feet.
We have here waiſtcoats for ſwimming, which are made of double ſail-cloth, with ſmall pieces, of cork quilted in between them.
​I know nothing of the ſcapbandre of M. de la Chapelle.
I know by experience that it is a great comfort to a ſwimmer, who has a conſiderable diſtance to go, to turn himſelf ſometimes on his back, and to vary in other reſpects the means of procuring a progreſſive motion.
When he is ſeized with the cramp in the leg, the method of driving it away is to give to the parts affected ſudden, vigorous, and violent ſhock; which he may do in the air as he ſwims on his back.
During the great heats of ſummer there is no danger in bathing, however warm we may be, in rivers which have been thoroughly warmed by the ſun. But to throw oneſelf into cold ſpring water, when the body has been heated in the ſun, is an imprudence Which may prove fatal. I once knew an inſtance of four young men, who having worked at harveſt in the heat of the day, with a view of refreshing themſelves plunged into a ſpring of cold Water: two died upon the ſpot, a third the next morning, and the fourth recovered with great difficulty. A copious draught of cold water, in ſimilar circumſtances, is frequently attended with the fame effect in North America.
The exerciſe of ſwimming is one of the moſt healthy and agreeable in the world. After having ſwam for ah hour or two in the evening, one ſleeps coolly the whole night, even during the moſt ardent heat of ſummer. Perhaps the pores being cleanſed, the inſenſible perſpiration increaſes and occaſions this coolneſs.—It is certain that much ſwimming is the means of ſtopping a diarrhœa, and even of producing a conſtipation. With reſpect to thoſe who do not know how to ​ſwim, or who are affected with a diarrhœa at a ſeaſon which does not permit them to uſe that exerciſe, a warm bath, by cleanſing and purifying the ſkin, is found very ſalutary, and often effects a radical cure. I ſpeak from my own experience, frequently repeated, and that of others to whom I have recommended this.
You will not be diſpleaſed if I conclude theſe haſty remarks by informing you, that as the ordinary method of ſwimming is reduced to the act of rowing with the arms and legs, and is conſequently a laborious and fatiguing operation when the ſpace of water to be croſſed is conſiderable; there is a method in which a ſwimmer may paſs to great diſtances with much facility, by means of a ſail. This diſcovery I fortunately made by accident, and in the following manner.
When I was a boy I amuſed myfelf one day with flying a paper kite; and approaching the bank of a pond, which was near a mile broad, I tied the ſtring to a ſtake, and the kite aſcended to a very conſiderable height above the pond, while I was ſwimming. In a little time, being deſirous of amuſing myſelf with my kite, and enjoying at the ſame time the pleaſure of ſwimming, I returned; and looſing from the ſtake the ſtring with the little ſtick which was faſtened to it, went again into the water, where I found that, lying on my back and holding the ſtick in my hands, I was drawn along the ſurface of the water in a very agreeable manner. Having then engaged another boy to carry my clothes round the pond, to a place which I pointed out to him on the other ſide, I began to croſs the pond with my kite, which carried me quite over without the leaſt fatigue, and with the greateſt pleaſure imaginable. I was only obliged occaſionally to halt a little in my courſe, and reſiſt its progreſs, ​when it appeared that, by following too quick, I lowered the kite too much; by doing which occaſionally I made it riſe again.—I have never ſince that time practiſed this ſingular mode of ſwimming, though I think it not impoſſible to croſs in this manner from Dover to Calais. The packet-boat, however, is ſtill preferable.