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INGEN-HOUSZ (INGENHOUSZ), JOHN. - DISCOVERY OF PHOTOSYNTHESIS - THE CLASSIC OF ECOLOGY.
Reference : 53319
(1780)
Expériences sur les Végétaux, spécialement sur la Propriété qu'ils possèdent à un haut degré, soit d'améliorer l'Air quand ils sont au foleil, soit de corrompre la nuit. ou lorsqu'ils sont à l'ombre" auxquelles on a joint unde Méthode nouvelle...
Paris, Théophile Barrois, 1780. 8vo. Fine cont. full mottled calf, richly gilt spine and gilt titlelabel in red leather. Edges gilt. LXVIII,333,(3) pp. and 1 folded engraved plate (showing his experimental apparatus). Light browning to margins of title-page, otherwise clean and with broad margins. A fine copy.
First French edition of perhaps the most important work in plant physiology. It is in this work that Ingen-Housz for the first time expounds the ideas and experiments that lead to his discovery of Photosynthesis in plant life, and as such it is of fundamental importance in the economy of living things. ""His Experiments upon vegetables was published in the autumn of 1779 and was at once recognized as a very important advance. In brief he showed, that oxygen evolution by plant is absolutely dependent on light and that it only occurs from those parts which are green...The proof that light and green tissues are both essential for oxygen production finally cleared up the apparent contradictions and variable results of earlier experiments. Priestly was ""much pleased"" with Ingen-Housz's experiments and pointed immediately to the salient facts that he had established."" (A.G. Morton: History of Botanical Science. p. 332.). Dibner: Heralds of Science No. 29. - Garrison & Morton No. 103. - Horblit No. 55. (All the English edition of 1779).
On some new Methods of suspending Magnetical Needles. Read June 17, 1779.
(London, J. Nichols, 1779). 4to. Extract from ""Philosophical Transactions, of the Royal Society of London."" Vol. 69, Year 1779 - Part II. Pp. 537-546 and 1 folded engraved plate.
First printing. ""In the field of magnetism, Ingen-Housz experimented with artificial magnets, made according to the ideas of Gowin Knight, and devised methods of dampening the vibrations of magnetic needles. He also discovered the paramagnetism of platinum.""(DSB).
Account of a new Kind of inflammable Air or Gass, which can be made in a Moment without Apparatus, and is fit for Explosion as other inflammable Gasses in use for that Purpose" together with a new Theory of Gun-Powder. Read March 25, 1779.
(London, J. Nichols, 1779). 4to. Extract from ""Philosophical Transactions, of the Royal Society of London."" Vol. 69, Year 1779 - Part II. Pp. 376-418 and 1 folded engraved plate, showing apparatus (air pistols etc.).
First printing of Ingenhouz's memoir in which he shows a new way to make inflammable air. - Ingenhouz is most widely known for his discovery of photosynthesis which he published in the same year as the offered paper (1779).""An interesting paper written from the point of view of a phlogistonist and dealing with the forces of explosions of air or oxygen and ether vapour. Contains frequent references to Priestly and also to Lavoisier, Cavendish, Fontana.""(Duveen, p. 305).""In 1779, Jan Ingenhouz, also reported new ways of making inflammable airs. He had learnt the first method from John Cuthberson and Hendrik Aeneae on a visit to Amsterdam in 1777...When he returned to London, he tried to find simpler ways of generating the air so that it could be used as a substitute for inflammable air from metals in Volta's inflammable air pistol. He devised a way of volatising ether (Diethyl ether) for this purpose, but he thought that these to airs were the same.""(Leslie Tomary).
