Sciences occultes

118 résultats

Trier parPrix croissant

Pertinence Auteur A - Z Auteur Z - A Titre A - Z Titre Z - A Prix croissant Prix décroissant Libraire A - Z Libraire Z - A

Par page25

25 50 100

Filtres

Bray, WBiblio.com

Sketch of a Tour into Derbyshire and Yorkshire: Including Part of Buckingham Warwick Leicester Nottingham Northampton Bedford and Hertford-Shires.

Hales, StephenBiblio.com

Statical Essays Containing Vegetable Staticks or an account of some statical experiments on the sap in vegetables : being an essay towards a natural history of vegetation

1738019442At the West-End of St Paul's London: W. Innys & R. Manby 1738. Third edition with amendments. Small octavo pp xiv 376 illustrated with 19 engraved plates small octavo pp xiv 376 slight signs of age-toning and dustiness but generall quite clean internally the front endpaper detached contemporary full calf poor the covers nearly detached. In Vegetable Staticks Hales studied transpiration - the loss of water from the leaves of plants. He estimated the surface area of the leaves of the plant and the length and surface area of the roots. This allowed Hales to compare the calculated influx of water into the plant with the amount of water leaving the plant by transpiration through the leaves. He also measured 'the force of the sap' or root pressure. Hales commented that "plants very probably draw through their leaves some part of their nourishment from the air". He prefigured the cohesion theory of water movement in plants although his ideas were not understood at the time so he did not influence the debate on water transport in plants in the 19th century. He also speculated that plants might use light as a source of energy for growth i.e. photosynthesis based on Isaac Newtons suggestion that "gross bodies and light" might be interconvertible. He also describes experiments that showed that "air freely enters plants not only with the principal fund of nourishment by the roots but also thro the surface of their trunks and leaves". While Hales work on the chemistry of air appears primitive by modern standards its importance was acknowledged by Antoine Lavoisier the discoverer of oxygen. Hales invention of the pneumatic trough to collect gases over water is also considered a major technical advance. Modified forms of the pneumatic trough were later used by William Brownrigg Henry Cavendish and Joseph Priestley in their research. Blanche Henrey 779. Full-Leather. Good. W. Innys & R. Manby Hardcover

Mike Park Ltd · Royaume-Uni150,00 £GB≈ 171,27 €

Storck Antonii (Anton von)Biblio.com

Libellus quo demonstratur colchici autumnalis radicem. Non solum tuto posse exhiberi hominibus sed et ejus usu interno curari quandoque morbos difficillimos qui aliis remediis non cedunt. Jungitur simul plantae effigies aere excusa

1763019038Vindobonae Vienna: Joannis Thomae Trattner 1763. "A little book which shows Colchicum autumnale Meadow Saffron root not only safe for human use but also useful for internal cures whenever diseases difficult to cure will not yield to other medicines". Small octavo illustrated with one folding engraved plate a little foxed around the margins and with a corner creased pp 96 some foxing but otherwise firm throughout the verso of the title pages has an early stamp of an Austrian library also with the perforated stamp of the John Crerar library and its tiny withdrawn stamp an early signature on the title page with the attractive bookpate of the Crerar Library on the front endpaper the free front endpaper nearly detached. red quarter morocco and marbled boards rubbed . Anton von Storck 1731 - 1803 was an Austrian physician. Storck is remembered for his clinical research of various herbs and their associated toxicity and medicinal properties. His studies are considered to be the pioneering work of experimental pharmacology and his method can be regarded as forming a blueprint for the clinical trials of modern medicine. He was convinced that plants regarded as poisonous still had medicinal applications if employed in carefully controlled quantities. Störck was particularly interested in the medical possibilities of plants such as hemlock henbane jimsonweed and autumn crocus. His experiments with these plants involved a three-step process; initially used on animals followed by a personal trial and finally given to his patients all the while maintaining a "sliding-scale" approach to determine the optimum dosage. Störck's numerous Latin medical tracts detailing his experiments into the therapeutic effects of poisonous plants excited great interest and were translated into German French English Dutch and Portuguese rapidly becoming influential medical texts throughout Europe. First Edition. Quarter leather. Good. Joannis Thomae Trattner Hardcover

Mike Park Ltd · Royaume-Uni165,00 £GB≈ 188,40 €

Sciences occultes

Filtres actifs

Siècle

Langage

Ajouté

Sujets

Catalogues

Filtres actifs

Siècle

Langage

Ajouté

Sujets

Catalogues

Filtres actifs

Siècle

Langage

Ajouté

Sujets

Catalogues