The Genus Pinus PDF Download
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Author: George Russell Shaw
Publisher:
ISBN:
Category : Pine
Languages : en
Pages : 124
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Book Description
Author: George Russell Shaw
Publisher:
ISBN:
Category : Pine
Languages : en
Pages : 124
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Book Description
Author: Aylmer Bourke Lambert
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 376
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Book Description
Author: Aljos Farjon
Publisher: BRILL
ISBN: 9047415167
Category : Science
Languages : en
Pages : 235
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Book Description
This second edition of the conifer book Pines is an amended and updated version of the first edition, which sold out in 2002. The scope and structure of the book have been maintained. It includes several taxonomic changes and presents a new chapter on phylogeny. Conservation aspects have been added. The book contains a total of 92 drawings and 103 distribution maps.
Author: Aljos Farjon
Publisher: Brill Academic Publishers
ISBN: 9789004070684
Category : Pin
Languages : en
Pages : 0
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Book Description
Author: Aylmer Bourke Lambert
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 256
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Book Description
Author: Nicholas Tiho Mirov
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 624
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Book Description
Preface: Working for many years with pines, I have been asked many questions I could not answer. Often I have thought how useful it would be for bothe the curious layman and the busy scholar to have assembled together as much information as possible on pines. Being a biologist, I am primarily interested in the biology of pines-their origin and development, their chemical composition, and their physiological processes. These considerations have naturally led me to the past and present distribution of pines. Difficulties of presenting these aspects of the subject are many The literature on pines is enormous; it is scattered through scientific, trade, and popular journals. What should be included and what omitted were not easy decisions. For instance, chemical components of pine and wood are considered; but physical properties of pine lumber are not, although there is a wealth of published information in that field. Keeping in mind the traditional remoteness of chemistry from plant taxonomy, I have perhaps oversimplified, in a conciliatory mood, the presentation of the chemical aspects of pines. On the other hand, I have attempted to make the presentation of taxonomy palatable to chemists, who are not always concerned with the ways and rules of classifying plants and are apt either to disregard accepted nomenclature entirely or to accept it in an amazingly uncritical manner. Our knowledge of the genus Pinus is rather uneven. Certain groups of chemical substances (polyphenols, terpenes) have been studies extensively; others, such as fats, are still known only sporadically. Alkaloids have been discovered in some pines only recently. Some physiological processes, such as mineral nutrition, have been investigated more thoroughly than others, for example, transpiration. Such unevenness will be noticed throughout the book. I have attempted to give ansers to many questions about pines; many have remained unanswered, and new ones have arisen. I have even attempted to offer some gerealizations and speculations, hoping that their presentation would not be condemned as heresy but, rather, would be accepted as a stimulus to more research along controversial lines. I have always been encouraged by Darwin's remark, in one of his letters to Wallace, that without speculation there would be no progress. N.T. Mirov--Berkeley, California, January, 1967.
Author: Aylmer Bourke Lambert
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Aylmer Bourke Lambert
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 190
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Book Description
Author: Aljos Farjon
Publisher:
ISBN:
Category : Architecture
Languages : en
Pages : 248
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Book Description
This second edition of the conifer book PINES is an amended and updated version of the first edition, which sold out in 2002. The scope and structure of the book have been maintained. It includes several taxonomic changes and presents a new chapter on phylogeny. Conservation aspects have been added. The book contains a total of 92 drawings and 103 distribution maps.
Author: Aylmer Bourke Lambert
Publisher: Theclassics.Us
ISBN: 9781230365183
Category :
Languages : en
Pages : 42
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Book Description
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1832 edition. Excerpt: ... SOME ACCOUNT OF THE MEDICINAL AND OTHER USES OF VARIOUS SUBSTANCES PBEPAEED FROM TREES OF THE GENUS PINUS. Most species of Pinus may be made to yield (and many of them produce spontaneously) a remarkable resinous juice, usually called Turpentine. This appellation more properly belongs to the product of a different genus, called by Linnaeus Pistachia, which contains the tree Terebinthus* of the ancients. The juice of Pines, however, like that of the Turpentine trees, has an austere, astringent taste, singular viscosity and transparency, ready inflammability, and a disposition to become more or less concrete. In distillation with water, it yields a highly penetrating essential oil, and the liquor is found to be impregnated with an acid, a brittle resinous matter remaining behind. Digestion with rectified spirit of wine completely dissolves all the resinous part, along with which some portion jof the insipid gum, or mucilage, is also taken up. If this solution be DEGREESfiltered, and diluted largely with water, it becomes turbid, and throws off the greatest part of the oil, the gummy substance being retained. If the solution be subjected to distillation, the spirit brings over with it some of the lighter oil, so as to be sensibly impregnated with its terebinthinate odour, and it leaves behind an extract differing from the resin separated by water, in having an admixture of mucilage. The native juice becomes miscible with water, by the mediation of the yolk or the white of an egg, but more elegantly by that of vegetable The 1tpiuv9os of Theophrastus, (lib. 3. c. 3, ) and Dioscorides, (lib. 1. cap. 76, ) from which the word Terebinthus seems to have been derived. Pistachia Terebinthus yields the resinous juice called in the shops Cyprus
