476 
DR. HEKBEKT WATNEY ON THE MINUTE 
Besides these two forms of nuclei, a third is sometimes met with (see Plate 43. fig. 40, b). 
There appears to be here some process of vacuolation of the nucleus ,* and this form is 
possibly an intermediate state between the disk-like and the spherical form of nucleus. 
Cells with nuclei in a state of vacuolation are not very frequently met with. They have 
been only found in animals killed during digestion. 
The membrana of the coiled tubes is exactly similar to that of the ducts of the tubes 
or that of Lieberkuhn’s glands. 
I must leave to another paper any complete description of fat-absorption in the 
stomach, only observing that in sucking animals the epithelium covering the surface is 
seen apparently completely filled with fat. This fact was noticed by Bruch (102) and 
Kolliker (103). In fully developed animals no fat can be observed in the epithelium 
covering the surfaces of the plicae villosae ; but the epithelium of the ducts and of the 
coiled tubes appears cloudy with fat, and this is much marked in animals whose stomachs 
contain bile. It is not intended by the foregoing remarks to give any opinion as to the 
method of fat-absorption in the stomach. 
The occurrence of lymphoid follicles in the mucosa will be discussed in the next 
chapter. 
CHAPTER III. 
THE MINUTE ANATOMY OE THE MUCOUS MEMBRANE AT THE POINT OE TRANSITION 
BETWEEN THE' STOMACH AND INTESTINE. 
In the following Chapter the anatomical continuity of Brunner’s glands with the 
coiled tubes of the stomach will be described. But before proceeding to the relation 
of the facts a short account of the history of the subject will be given. 
Bruch (104), 1849, spoke of racemose or acinous glands of the pylorus, which pass 
into the acinous glands of the duodenum (Brunner’s glands). 
Ecker (105), 1852, said that the racemose glands of the portio pylorica form an 
obvious transition to Brunner’s glands. 
This fact was either overlooked or denied until 
Cobelli (106), 1864, found, in the pyloric end of the stomach of man, branched 
mucous glands and acinous glands. The acinous glands are arranged in rows or little 
heaps radiating from the pylorus. At the commencement of the intestine the glands 
of Brunner were found in the submucosa and in the mucosa ; the muscularis mucosae 
at this point is very incomplete ; further down the intestine there is a definite muscu- 
laris mucosae, and the glands of Brunner are only found in the submucosa. From these 
observations the acinous glands of the portio pylorica. may be “ considered as a conti- 
nuation ” of Brunner’s glands. In the rabbit and dog only mucous glands were found 
in the pyloric end of the stomach. In the cat and in the Mustela putorius acinous 
glands occur in the pyloric end of the stomach. In all animals there exists a short 
tract where the glands of Lieberkuhn are wanting, and where Brunner’s glands are 
