Special anatomy and histology: in two volumes (Volume 2).

  • Horner, William E. (William Edmonds), 1793-1853.
Date:
1846
Catalogue details

Licence: Public Domain Mark

Credit: Special anatomy and histology: in two volumes (Volume 2). Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    ANATOMY AND HISTOLOGY. BOOK IT. PART II. GLANDS—AND THE ORGANS OF ASSIMILATION. CHAPTER I. Prolegomena on the Structure of Glands. The intimate structure of glands was but imperfectly attended to previously to the celebrated Malpighi, who, in the year 1665, pre- sented to the world his work entitled Exercitationes de Structura Viscerum. Till his time the most minute inquiry had gone but little beyond the point of observation, that glands consisted, as an ultimate arrangement of their particles, in small granular bodies called Acini, from their being clustered like grapes or berries, growing very closely together around a common stem and its branches. The simple idea, propounded by Malpighi, is, that each acinus being a gland of itself, consists of minute spheroidal sacs, which re- ceive the secretion from the blood vessels. Darwin at a much later period modified this idea by advancing that the change occurred in the spheroidal sacs themselves. The celebrated Ruysch having im- proved much the art of injection, was enabled to show in his prepara- tions, that what Malpighi considered as sacs or follicles, were really formed of convoluted blood vessels. He hence adopted the opinion, false in itself, that the substance proper of glands, is formed wholly of blood vessels, and that the minute branches of the latter terminate Vol. II.—2