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

Ray, JohnBiblio.com

The Wisdom of God Manifested in the Works of the Creation in Two Parts viz - the heavenly bodies elements meteors fossils vegetables animals beasts birds fishes insects the body of the earth its fugures motion and consistency.

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

1738015037At 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 fore-edge a little thumbed but otherwise very clean and crisp internally marbled endpapers contemporary full polished calf a thin decorated gilt line around the borders a little marked and worn the spine gilt decorated with raised bands lacking the top 25mm of the spine and lacking small portions at the top of each joint the joints cracking slightly. still an attractive copy. 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-Uni250,00 £GB≈ 285,45 €

Bradley, RichardBiblio.com

New Improvements of Planting and Gardening both Philosophical and Practical in Three Parts. To which is added that scarce and valuable tract intitled Herefordshire Orchards. The sixth edition with an appendix treating of several matters omitted

1731018259Paternoster Row & St Paul's Churchyard London: J & J Knapton; A Bettesworth & C. Hitch; J. Pemberton & D. Browne 1731. Sixth edition. The title pages to parts II and III are dated 1730 as is Hereforshire Orchards;the title page to the appendix is 1731. Thick octavo pp xiv 608 25 with an engraved frontispiece and thirteen engraved plates of which eight are folding several plates are folded awkwardly and several have frayed margins but only one has very slight loss of the engraved surface and it is this one which protrudes slightly from the fore-edge some age-toning occasional small splash marks a little wear throughout light early manuscript notes on the front endpapers contemporary full calf a bit worn and marked but perfectly sound lacking tiny pieces at head and tail of the spine the remains of a contemporary manuscript label on the spine. A reasonably good copy of one of the most influential of eighteenth century gardening books. Blanche Henrey 503. Little is known about Bradley's childhood aside from an early interest in gardening and the fact that he lived in the vicinity of London a city at the time with many amateur naturalists. Though Bradley lacked a university education his first publication Treatise of Succulent Plants gained him traction with influential patrons like James Petiver and later Hans Sloane. With their support he was proposed and elected a Fellow of the Royal Society in 1712 at the age of 24. Two years later Bradley visited the Netherlands and took an interest in horticulture. He spent the next decade back in England writing treatises on topics related to this central interest like weather fertiliser productivity and plant hybridisation. In recognition of his work in the field and with the thereafter unfulfilled promise that he would found and fund a university botanical garden the University of Cambridge named Bradley its first professor of botany in 1724 a position he would hold until his death. As Bradley was not a wealthy man in his later life and as this was an unsalaried position the newly minted academic continued to focus most of his efforts on making a living through publishing. According to his rival and successor John Martyn as well as his successor son Thomas Martyn Bradley did this at the expense of his students whom he reportedly neglected to even lecture to. Bradley made notable innovations and discoveries across a wide array of disciplines. For example this work included directions for the making and use of a rudimentary kaleidoscope to aid in formal garden design and layout. He also wrote about cooking and was the first to publish recipes in the English language using the then-exotic pineapple as the main ingredient. His History of Succulent plants was the seminal treatise on the topic and his studies of tulips and auriculas helped further accurate theories of plant reproduction. Bradley was also a pioneer in the examining of fungal spore germination and the pollination of plants by insects. His publications additionally contained information on how to build and use greenhouses early theories regarding agricultural productivity and pond ecology. . Sixth edition. Half-Leather. Fair. J & J Knapton; A Bettesworth & C. Hitch; J. Pemberton & D. Browne Hardcover

Mike Park Ltd · Royaume-Uni300,00 £GB≈ 342,54 €