We have from the foregoing Experiments many proofs of the very great and different quantities of moisture imbibed and perspired by different kinds of… - Stephen Hales

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We have from the foregoing Experiments many proofs of the very great and different quantities of moisture imbibed and perspired by different kinds of Trees, and also of the influence of the several states of the air, as to warm or cold, wet or dry, have on that perspiration. We see also what stores of moisture nature has provided in the Earth against a dry season, to answer this great expence of it in the production and support of vegetables; how far the dew can contribute to this supply, and how insufficient its small quantity is towards making good the great demands of perspiration: And that plants can plentifully imbibe moisture thro' their stems and leaves as well as perspire it.

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About Stephen Hales

(September 17, 1677- January 4, 1761) was an English clergyman whose inventions, studies and experiments made major contributions to developments in botany, and in both plant and animal . He was the first to measure utilizing his "Hales Manometer", and also invented a to distill various "airs" i.e., gases. His other medical or health related inventions include a ventillation bellow to improve air quality in enclosed spaces, and surgical for the removal of s. He was a philanthropist and wrote a popular tract on alcoholic intemperance.

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When Tar-waters of different Degrees of Strength were put into Florence Flasks, with other inverted Flasks fixed on them, and all were placed in the same Vessel of hot Water; on breaking the upper Flasks, the volatile acid Spirit could very sensibly be tasted, especially that of the stronger Tar-water; which shows that these Waters are impregnated therewith: and which when distilled from Turpentine, Dr. Boerhaave in his Chemistry says, is the best vegetable Acid that is known.

Hence likewise it is, that these spirituous Liquors rarely fail to destroy the Appetite and Digestion of those, who habituate themselves to them; for by drying up, and spoiling the Nerves, they make them insensible; they destroy also many of the very fine Blood Vessels, especially where their Fibres are most tender, as in the Brain; by which means, the Memory and intellectual Faculties are ruined: Nay, by inflaming the Blood, and disordering the Blood-Vessels and Nerves, they vitiate and deprave the Natural Temper.

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I was at first much discouraged, when I reflected on my Rashness, in venturing on an Undertaking, which had baffled the repeated Attempts of the best Philosophers and Chymists, both Ancient and Modern: In so much that they looked upon it as almost impracticable to find out any way to procure a wholesome Drink from Sea-Water.

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