308 Kojima 



of the rat ; some of the cells show striation in the outer zone, which 

 cannot as a rule be made out in the rat. The nuclei show evidence 



w *:. 





np-„ w\ 



^^■r JoP ^^ > /• -iff' »■- ■' ^^M^Mk'' *v 





j» . ^!* >" 



■• "W. 





Fig. 24.— Section ofpancreas of cat (male), meat-fed, normal. Micro photograph ; 

 magnified 400 diameters. JIallory's stain. 



The zymogen, which is stained deep red by Mallory, appears black in 

 the photograph. 



Fig. 25. — Section of pancreas of cat (male), meat-fed, with an addition of 

 20 grm. of fresh sheep-thyroid per diem during five days. Microphoto- 

 graph ; magnified 400 diameters, ilallory's stain. 



The tissue generally appears more compact than normal ; the most striking 

 difference is the diminution in the amount of zymogen granules, which, even 

 when p)resflnt, are not so much stained by the acid fuclisin as in the normal 

 condition. (Compare with fig. 24.) 



of enlargement, for whereas in the normal cat's pancreas the nuclei 

 measure from 5/x to 6'2|a, in the thj'roid-fed animals the size varies 

 from 5/A to 7'5u, and some are as much as 8/x; but no evidence of 



