116 DR. E. KLEIN. 
capsule, is an oval whitish gland, in size, aspect, and structure 
perfectly identical with the gland mentioned above in connection 
with the parotid; and it is this gland which has been noticed by 
Bermann (‘ Dissertat. Wiirzburg,’ 1878) as the tubular (mucous) 
gland in connection with the submaxillary gland of the guinea- 
pig, rabbit, and other mammals. 
I propose to call these two glands, viz. connected with the 
parotid and the submaxillary, as the admaxillary glands, and to 
distinguish the former, z.e. the one connected with the parotid, 
as the upper or superior, the latter, 7.e. the one connected with 
the submaxillary gland, as the lower or inferior admavxillary 
gland. As a rule, I find the inferior gland in the position 
mentioned above;! in one instance (that of an animal three to 
four weeks old), it was found on one side more or less buried 
between the lobes of the submaxillary, and on the other side 
it could not be detected on the outer surface at all. 
Measuring the diameter of the alveoli in sections through the 
resting glands of the same animal, hardened in spirit and stained 
in carmine, I find the transverse diameter of the alveoli of the 
parotid about 0°027 mm. and less; that of the alveoli of 
the admaxillary glands about 0°054 and more; and of the sub- 
maxillary gland about 0:04 mm. 
Measuring the cells lining the alveoli of the same three 
different glands just mentioned, I find the following to be the 
mean sizes : 
a. In the parotid, the cylindrical cells are 0°010 mm. in 
length, 0:007 in breadth; the pyramidal cells 0-010 in length, 
0:009 in breadth next the membrana propria, 0:0036 next the 
lumen. 
6. In the admaxillary glands, the cylindrical cells are 0°0198 
mm. in length, 0°01 in breadth; the pyramidal cells 0°018 in 
length, 00136 in breadth next the membrana propria, 0:0036— 
0:0054 next the lumen. 
e. In the submaxillary gland, the cylindrical cells are 0°0162 
mom. in length, 0°009 in breadth; the pyramidal cells 0°0144 in 
length, 0-007 in breadth next the membrana propria, 0°003 next 
the lumen. 
3. Attached to the front part of the submaxillary gland, and 
partly covering it, and often extending close to the parotid, is an 
oval whitish body; this is the thymus gland. As is well known, 
the guinea-pig does not possess a thoracic thymus; but the gland 
that I mentioned just now as situated bilaterally close to the 
submaxillary gland is found iz the young as well as in the adult 
1 The position of this gland is not, however, constant, for in one 
instance I found it on one side in front, on the other at the inner margin 
of the submaxillary. 
