CHAP. I. CALCIFEROUS GLANDS. 49 



and these contained a distinct nucleus and 

 iiucleolus. They were only so far acted on 

 by acetic acid that the nucleus was thus 

 rendered more distinct. A very small con- 

 cretion was removed from between two of the 

 lamella? within an anterior gland. It was 

 imbedded in pulpy cellular matter, with 

 many free calciferous cells, together with a 

 multitude of the larger, free, nucleated cells, 

 and these latter cells were not acted on by 

 acetic acid, while the former were dissolved. 

 From this and other such cases I am led to 

 suspect that the calciferous cells are developed 

 from the larger nucleated ones ; but how 

 this is effected was not ascertained. 



When an anterior gland contains several 

 minute concretions, some of these are generally 

 angular or crystalline in outline, while the 

 greater number are rounded with an irregu- 

 lar mulberry-like surface. Calciferous cells 

 adhered to many parts of these mulberry-like 

 masses, and their gradual disappearance could 

 be traced while they still remained attached. 

 It was thus evident that the concretions are 

 formed from the lime contained within the 



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