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Autor(en): 
  • Arthur Henfrey
  • Scientific Memoirs, Selected From the Transactions of Foreign Academies of Science, and From Foreign Journals, 1853: Natural History (Classic Reprint) 
     

    (Buch)
    Dieser Artikel gilt, aufgrund seiner Grösse, beim Versand als 3 Artikel!


    Übersicht
     
    Lieferstatus:   i.d.R. innert 7-14 Tagen versandfertig
    Genre:  Naturwissensch., Medizin, Technik 
    ISBN:  9780484786409 
    EAN-Code: 
    9780484786409 
    Verlag:  Forgotten Books 
    Einband:  Gebunden  
    Sprache:  English  
    Dimensionen:  H 229 mm / B 152 mm / D 24 mm 
    Gewicht:  638 gr 
    Seiten:  362 
    Zus. Info:  78:B&W 6 x 9 in or 229 x 152 mm Blue Cloth w/Jacket on White w/Gloss Lam 
    Bewertung: Titel bewerten / Meinung schreiben
    Inhalt:
    Excerpt from Scientific Memoirs, Selected From the Transactions of Foreign Academies of Science, and From Foreign Journals, 1853: Natural History

    Where is the crude nutrient sap elaborated? How does it arrive there P By what path is it carried back to the other parts of the plant to furnish the material for development? In what anatomical and physiological relation do the air-vessels stand to the system in which the saps circulate?

    Injections cannot be applied in the endeavour to trace the paths by which ¿uids penetrate the vegetable tissues, on account of the minute size of the vessels, nor, indeed, without destruc tion of the substance. But the Spontaneous absorption of easily detected ¿uids accomplishes in plants what is done by injection in human anatomy. Coloured ¿uids, however, are rarely taken up by uninjured roots; I have therefore made use of a very dilute solution of ferrocyanide of potassium, which may be readily detected in any spot to which it has penetrated, by the blue colour it assumes when chloride of iron is applied. And as the Prussian blue thus formed is insoluble in aqueous ¿uids, a little care in slicing and preparing the objects enables us to avoid the spreading of the colour to unaffected parts, which would deceive the observer as to the boundaries within which the natural mo tion of the sap takes place.

    About the Publisher

    Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com

    This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

      
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