Stephen Hales Quotes

And since in vegetables, their growth and the preservation of their vegetable life is promoted and maintained, as in animals, by the very plentiful and regular motion of their fluids, which are the vehicles ordained by nature, to carry proper nutriment to every part; it is therefore reasonable to hope, that in them also, by the same method of inquiry, considerable discoveries may in time be made, there being, in many respects, a great analogy between plants and animals.

I have here, and as occasion offered under several of the foregoing Experiments, only touched upon a few of the most obvious instances, wherein these kind of researches may possibly be of service in giving us useful hints in the culture of plants: Tho' I am very sensible, that it is from long experience chiefly that we are to expect the most certain rules of practice, yet it is withal to be remembred, that the likeliest method to enable us to make the most judicious observations, and to put us upon the most probable means of improving any art, is to get the best insight we can into the nature and properties of those things which we are desirous to cultivate and improve.

The bodies which I distilled... (Fig. 38.) were Horn, calculus humanus, Oystershell, Oak, Mustard seed, Indian-wheat, se, Tobacco, oil of Anniseed, oil of Olives, Honey, Wax, Sugar, , , Earth, Walton Mineral, sea Salt, Salt-petre, Tartar, Sal Tartar, , Minium.

It were a very extraordinary Circumstance that two Persons at so great a Distance from each other, without getting a Hint of it one from the other, should happen to hit on inventing a like very useful Engine.

About the Year 1675, William Walcot, Brother to Sir , obtained a Patent for making Sea-Water fresh: And the King, before the Grant of this Patent, had the curiosity to go and see Mr. Walcot do it, which was by distilling it in a very large Still; into the Still he put some Ingredient, which was to cure the distilled Water of any noxious Quality: But what it was, he kept a great secret. I suspect that the principal thing was only Distillation, because in all his printed Accounts of it, he purposely avoids the calling it a Still, but calls it a Machine or Engine, and Distilling he calls the working of the Machine, not Distilling.

He proposes by this means to cure intermitting Fevers, by having the Air in the Room rarefied in the cold Fit, and condensed in the hot Fit; during the whole time of which, the Patient is to continue therein: And recommends the use of it, among other Distempers, to cure the Stone and the Pox.

And Mr. Triewald further says, that in the Summer of the Year 1742, be bad sent one of his Engines, calculated for a Sixty Gun Man of War, to France; which being approved of by the Royal Academy of Sciences at Paris, the King of France has ordered all the Men of War to be furnished with the like Ventilators.

[It] is evident, not only from considering the Effects of the Engine, which exchanges great Quantities of bad, for good Air; but also from the Event it having been found very salutary by the Swedes who have made the Trial.

Mr. Walcot says of his Water, that it was smooth, soft, cooling, and would not decay or putrify in many Years, no not in seven Years... But by its continuing so long in an unputrified State, I suspect there was Spirit of Salt in it, that came over in Distillation: For tho' distiiled common Water is known to keep longer without putrifying, than undistilled Water by reason of its greater purity; yet I found some of the good distiiled Sea-Water to putrify in some time after Distillation, but that which had in it Spirit of Salt never putrified.

Being informed, while this Book was printing, that it was said that M.D. F.R.S. had long since made a like Proposal, for sweetning the Air of Ships, in a Treatise called Aëro-Chalinos, or a Register for the Air, printed in the Year 1677... In which Book is the following Proposal, viz. In order to have the Benefit of Change of Air, to another Country or Climate, almost at any Season, and that without going out of the House; he would have a Room, which he calls an Air-Chamber, to be built... Air-tight every where; with a very large Pair of Organ-Bellows to be placed in the Room; to or from which, Air is to be conveyed through the Wall, by a Copper Pipe; with Valves to open inward or outward as Occasion shall require. With these Bellows, the Air in the Room is either to be condensed and made heavier, by forcing Air in, or lighter, by conveying Air out of the Room.

And if we reflect upon the discoveries that have been made in the animal œconomy, we shall find that the most considerable and rational accounts of it have been chiefly owing to the statical examination of their fluids, viz. by enquiring what quantity of fluids, and solids dissolved into fluids, the animal daily takes in for its support and nourishment: And with what force and different rapidities those fluids are carried about in their proper channels, according to the different secretions that are to be made from them: And in what proportion the recrementitious fluid is conveyed away, to make room for fresh supplies; and what portion of this recrement nature allots to be carried off, by the several kinds of emunctories and excretory ducts.

In the Year 1740, I wrote to Dr. Martin Physician to Lord Cathcart, General of the Forces which lay imbarked at Spithead, for an Expedition in America, to propose (besides the usual sprinkling between Decks with Vinegar) the hanging up very many Cloths dipped in Vinegar, in proper Places between Decks, in order to make the Air more wholesome: And in case an infectious Distemper should be in any Ship, to cure the Infection with the Fumes of burning Brimstone.

There is no doubt but it will fully answer your Lordships tender Care and Concern for the Welfare of Navigators, as it will contribute much to their Health, by supplying them, in exchange for a very noxious, with Plenty of fresh Air, that genuine Cordial of Life: For that wonderful Fluid the Air, which, by infinite Combinations with natural Bodies, produces surprizing Effects, as it is on the one Hand when pure, the chief Nourisher and Preserver of the Life of Animals and Vegetables; so, when foul and putrid, it is the great Principle of their Destruction.

I shall... give an Account of what has been formerly attempted for making Sea-Water drinkable, especially what was done by Mr. Walcot and Mr. Fitz-gerald in King Charles the Second's Time.

It is hoped, that the Light given by these Researches, may be of use in skilful Hands, for regulating and adapting the due Proportions of the acid, and the oily Principles, to different Cases and Constitutions. This is the proper Province of the Physician, which I am no ways qualified to meddle in.