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XVIII. The Minute Anatomy of the Alimentary Canal. By Herbert Watney, M.A., 
M.JD., Demonstrator of Microscopical Anatomy at St. George's Hospital. Commu- 
nicated by Dr. Klein, F.B.S. 
Received December 16, 1875, — Read January 27, 1876. 
Table op Contents. 
Chapter I. Page 
The Minute Anatomy of the Mucous Membrane 
of the Intestine, and the Method of Pat- 
absorption. 
Preliminary statement of the result of this re- 
search 452 
History of the subject 452 
Methods employed 458 
The epithelium, and the reticulum and lymph- 
corpuscles among the epithelial cells 459 
Membrana propria, of the villi, and of the pro- 
cesses of the mucous membrane of the large 
intestine 461 
The membrana of Lieberkuhn’s crypts 462 
The disposition and ter m ination of the muscles 
in the processes of the mucous membrane of 
the rabbit’s colon 462 
The disposition of the muscle-bundles and the 
muscle-endings in the villi 463 
Structure and relations of the blood-vessels of 
the mucosa 464 
The character and relations of the chyle-vessels 
of the villi 465 
The tissue composing the mucosa 465 
Pat-absorption by the reticulum among the 
epithelial cells 467 
Pat-absorption by the reticulum of the villi . . 469 
Chapter II. Page 
The Minute Anatomy of the Mucous Membrane 
of the Pyloric end of the Stomach. 
History of the subject 469 
The general structure of the mucous mem- 
brane 470 
The epithelium covering the pyloric end of the 
stomach 471 
Germination of the epithelium 471 
The connective-tissue reticulum among the 
columnar epithelium 473 
The character of the membrana propria 474 
The muscle-endings in the plica; villosse and the 
perivascular spaces 474 
The proper gland-tubes of the pyloric end of the 
stomach 475 
Chapter III. 
The Minute Anatomy of the Mucous Membrane 
at the point of transition between the Stomach 
and Intestine 476 
Explanation of the Plates 479 
References 486 
The following is an account of a research undertaken in the laboratory of the Brown 
Institution in July 1873, under the direction of Dr. Klein, and carried on there under 
his direction until October 1874. During the last year it has been continued in the 
physiological laboratory of St. George’s Hospital. 
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