2l8 
ON THE STOMACH GLANDS OF THE RAT AND RABBIT 
Histological Review of the Researches on the Stomach of Rat and 
Rabbit, and Conclusion of the Macro, and Microscopical Studies. 
Ill spite of the rapid progress which morphological science has recently 
luulergone a detailed study of the rat's alimentary tractus has been neglected 
for more than twenty years ; so far as I am aware, since the appearance of 
the notable observation byE delmann in 18S9, no work concerning the system 
of the organ in question has been published. 
The first investigation was made as early as 1807, when Home published 
his work. This work must, of course, be appreciated so far as it is a work of 
such an early date ; yet it is very rough and incomplete in observation. The 
author incorrectly assumes that two portions, the Ventriculum and the Cardia, 
are found in the stomach of the house rat. In 1854, Leydig published his 
work which shows to a great extent full agreement with the present results 
obtained by myself. He correctly made out the distinctive difference of the 
cardiac portion from the Ventriculum. According to him, the latter portion 
is thickly covered with innumerable gastric glands, whereas the cardiac por- 
tion is entirely destitute of these glands, being completely covered by a con- 
sistent skin ciuite like the membrane coating the inner surface of the Oeso- 
phagus. 
In 1889, Grimm wrote that the blind sac of the Cardia part of the 
mouse's stomach has plaster ejnthel and is lacking in glands. 
The occounts given by Edelmann (1889) are, in accuracy as well as in 
correctness doubtless lifted above the level arrived at by all the previous ob- 
servers. Whilst in the works previous to his, only the common name of the 
animal employed as material was given, Edelmann states the scientinc name 
of the animal forming his material ; he made use of Mus documanus. Further- 
more the author pointed out, for the first time, the existence of the cardiac 
glands in the mouse, which, before his time had been entirely overlooked. 
In details, however, I cannot confirm his results. In the first place, as seen 
in a figure given by the author, the distribution of the cardiac glands is ex- 
ceedingly large in extent ; it is so large that the glands extended so much 
