344 



CHANGES IN ALBUMINOUS CELLS. [BOOK n. 



same tim?, at least after prolonged stimulation, becoming distinctly 

 smaller. 



197. In a mucous salivary gland the changes which take 

 place are of a like kind, though apparently somewhat more com- 

 plicated, owing probably to the peculiar characters of the mucin 

 which is so conspicuous a constituent of the secretion. 



FIG. 79. SECTIONS OF THE PAROTID OP THE BABBIT. A at rest, B after stimu- 

 lation of the cervical sympathetic. Both sections are from hardened gland. (After 

 Heidenhain.) 



If a piece of resting, loaded submaxillary gland be teased out, 

 while fresh and warm from the body, in normal saline solution, the 

 cell-substance of the mucous cells (Fig. 80 a) is seen to be crowded 



FIG. 80. Mucous CELLS FROM A FRESH SUBMAXILLARY GLAND OF DOG. (Langley.) 



a and 6 isolated in 2 p.c. salt solution ; a, from loaded gland, b from discharged 

 gland (the nuclei are usually more obscured by granules than is here represented). 



(On teasing out a fragment of fresh in 2 to 5 p.c. salt solution, the cells usually 

 become broken up so that isolated cells are rarely obtained entire ; isolated cells are 

 common if the gland be left in the body for a day after death.) 



a', b', treated with dilute acid ; a' from loaded, b' from discharged gland. 



with granules or spherules which may fairly be compared with 

 the granules of the pancreas, though perhaps less dense and solid 

 than these. 



