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An HISTORICAL ACCOUNT of

a New METHOD for extracting the foul Air out of SHIPs, c.

PR

E F A C E.

I

Have often said, that it is not, in our country ať

least, so easy a thing to serve the public, as is commonly imagined ; not meaning hereby the difficulty of finding out useful experiments, (although even that is great enough), but the hardships which attend the putting them in practice. Whence this should come to pass, it is foreign to the present purpose to inquire. They who are acquainted with the several motives upon which men often act, among which felf-interest, envy, pride, and obstinacy, have no inconsiderable share, will readily see the springs of this seemingly unaccountable disposition of mind.

I would not have it thought, that I have had occasion to make this ill-natured remark, from what I may myself pretend to have done for the benefit of the public : but it is sufficiently justified by the opposi. tion which the invention described in the following treatise has met with. The machine is so simple, and of fo extensive advantage, that as it is surprising to see the greatest pains taken to make it abortive at first, so it is no less strange that it has not been so universally used, in the royal navy, as might have been expected from the great good which it promises. It is not my business to examine the causes of this

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t; which is in a very moving and handsome or complained of in the voyage of the great Lord 1*; an immortal work, which will be always with a pleasure, equal to the bencfit to be reapom it, with regard to our navigation and come to those parts of the world, to which the adüres relate. Is this hero is not less admired for his humanity good sense, than for his conduct and courage ; has taken care that the relation of his enterprises ald be a inonument of the one, as well as of the er. The accounts given of that strange disease, so il to our feamen, the fea-fcurvy, are hiots so new i useful in physic, that I have thought it not unbeming the place with which I am honoured in my bfeffion, to write a short discourse on this subject, d give it to the honest and ingenious author, to be ablished together with his reprinted Account of a ew method for extracting the foul air out of ships, c. :

an invention, which, I may venture to say, does onour to our nation, and will in time be found of hore public benefit than any discovery in mechanics, which has been produced these hundred years.

Having therefore had the fatisfaction, in the beginbing, to recommend this experiment to the admiralty, I now join a short discourse on the scurvy to the reprinted edition of Mr Sutton's book, as a convincing and happy proof of the success which attends it. And the author has also added some other authentic accounts to the fame purpose. From all these things duly considered, it is to be hoped that the evil spirit of opposition, which, as is mentioned in Mr Sut* See p. 36. 37

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