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according to the season, either reading or writing. This practice is not in the least painful, but, on the contrary, agreeable; and if I return to bed afterwards, before I dress myself, as sometimes happens, I make a supplement to my night's rest of one or two hours of the most pleasing sleep which can be imagined. I find no ill consequences whatever result ing from it, and that at least it does not injure my health, if it does not in fact contribute much to its preservation.-I shall therefore call it for the future a bracing or tonic bath.

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March 10, 1773. I shall not attempt to explain why damp clothes occasion colds rather than wet ones, because I doubt the fact; I imagine that neither the one nor the other contribute to this effect, and that the causes of colds are totally independent of wet, and even of cold. I propose writing a short paper on this subject, the first moment of leisure I have at my disposal.-In the mean time, I can only say, that having some suspicions that the common notion, which attributes to cold the property of stopping the pores

and obstructo ing perspiration, was ill-founded, I engaged a young physician, who is making some experiments with Sanctorius's balance, to estimate the different proportions of his perspiration, when remaining one hout quite naked, and another warmly clothed. He puro sued the experiment in this alternate manner fot eight hours successively, and found his perspiration almost double during those hours in which he was naked.

OBSERVATIONS ON THE GENERALLY PRE

VAILING DOCTRINES OF LIFE & DEATH.

TO THE SAME.

Your observations on the causes of death, and the experiments which you propose for recalling to life those who appear to be killed by lightning, demonstrate equally your sagacity and humanity. It appears that the doctrines of life and death, in general, are yet but little understood. A toad buried in sand will live, it is said, until the sand becomes petrified; and then being inclosed in the stone, it may still live for we know not how many ages. The facts which are cited in support of this opinion are too numerous and too circumstantial not to deserve a certain degree of credit. As we are accustomed to see all the animals with which we are acquainted eat and drink, it appears to us difficult to conceive how a toad can be supported in such a dungeon. But if we reflect, that the necessity of nourishment, which animals experience in their ordinary state, proceeds from the continual waste of their substance by perspiration; it will appear less incredible, that some animals in a torpid state, perspiring, less because they use no exercise, should have less need of aliment; and that others, which are covered with scales or shells, wbich stop perspiration, such as land and sea turtles, serpents, and some species of fish, should be able to subsist a considerable time without any nourishment whatever. A plapt, with its flowers, fades and dies immediately, if exposed to the air without having its roots immersed in a humid soil, from which it may draw a sufficient quantity of

OBSERVATIONS ON LIFE AND DEATH.

35

moisture to supply that which exhales from it's substance, and is carried off continually by the air. Perhaps, however, if it were buried in quicksilver, it might preserve, for a considerable space of time, it's vegetable life, its smell and colour. If this be the case, it might prove a commodious method of transporting from distant countries those delicate plants which are unable to sustain the inclemency of the weather at sea, and which require particular care and attention.

I have seen an instance of common flies preserved in a manner somewhat similar. They had been drowned in Madeira wine, apparently about the time when it was bottled in Virginia, to be sent to London. At the opening of one of the bottles, at the house of a friend where I was, three drowned Aies fell into the first glass which was filled. Having heard it remarked that drowned flies were capable of being revived by the rays of the sun, [ proposed making the experiment upon these. They were therefore exposed to the sun upon a sieve which had been employed to strain them out of the wine. In less than three hours, two of them began by degrees to recover life. They commenced by some convulsive motions in the thighs, and at length they raised themselves upon their legs, wiped their eyes with their fore feet, beat and brushed their wings with their hind feet, and soon after began to fly, finding themselves in Old England, without knowing how they came thither. The third continued lifeless untill sunset, when, losing all hopes of him, he was

I wish it were possible, from this instance, to invent a method of embalining drowned persons, in such a manner that they might be recalled to life at any period, however distant;

thrown away.

for having a very ardent desire to see and observe the state of America a hundred years hence, I should prefer, to an ordinary death, the being immersed in a cask of Madeira wine, with a few friends, until that time, then to be recalled to life by the solar warmth of my dear country! But since, in all probability, we live in an age too early, and too near the infancy of science, to see such an art, in our tine, brought to it's perfection, I must, for the present, content myself with the treat, which you are so kind as to promise me, of the resurrection of a fowl or a turkey cock.

PRECAUTIONS TO BE USED BY THOSE WHO ARE ABOUT TO UNDERTAKE A SEA VOYAGE.

When you intend to take a long voyage, nothing is better than to keep it a secret till the moment of your departure. Without this, you will be continually interrupted and tormented by visits from friends and acquaintances, who not only make you lose your valuable time, bụt make you forget a thousand things which you wish to remember; so that when you are embarked, and fairly at sea, you recollect, with much uneasiness, affairs which you have not terminated, accounts which you have not settled, and a number of things which you proposed to carry with you, and

find i he want of every moment. Would it not be attended with the best consequences to reform such a custom, and to suffer a traveller, with. out deranging him, to make his preparations in quietness, to set apart a few days, when these are finished, to take leave of his friends, and to receive their good

which you

wishes for his happy return?

It is not always in one's power to choose a captain; tho' great part of the pleasure and happiness of the passage depends upon this choice, and tho' one must for a time be confined to bis company, and be in some measure under his command. If he be a social sensible man, obliging, and of a good disposition, you will be so inuch the happier. One sometimes meets with people of this description, but they are not common; however, if your's be not of this number, if he be a good seaman, attentive, careful, and active in the management of his vessel, you must dispense with the rest, for these are the most essential qualities. Whatever right you may have, by your agreement with him, to the provisions he has taken on board for the use of the passengers, it is always proper to have some private store, which you may make use of occasionally. You ought, therefore to provide good water, that of the ship being often bad; but you must put it into bottles, without which you cannot expect to preserve it sweet. You ought also to carry with you good tea, ground coffee, chocolate, wine of that sort which you like best, cider, dried raisins, almonds, sugar, capillaire, citrons, rum, eggs dipped in oil, portable soup, bread twice baked. With regard to poultry, it is alınost useless to carry any with you, unless you resolve to undertake the office of feeding and fattening them your. self. With the little care which is taken of them on ship-board, they are almost all sickly, and their flesh is as tough as leather.

All sailors entertain an opinion, which has undoubtedly originated formerly from a want of water, and when it has been found necessary to be sparing of it, that poultry

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