Smithsonian Report, 1896. 



Plate XIII 



Charged 



Discharging 



Discharged ^g 



Processes of life Revealed by the Microscope. 



Fig. 3. Sections of a gland in various phases of activity. The upper series represents the 

 gland as in longisection or lengthwise and the lower series as in transection or cut across. In 

 the longisections I, in the right-hand figure, represents the cavity or lumen of the gland into 

 which the secretlou of the gland is poured. The arrows at the top represent the direction 

 taken by the secretion when it is poured out. 



In the lower right-hand figure I represents the lumen, n the nucleus of one of the cells, and 

 cl b the cell body of the same cell. The words Charged, Discharging, and Discharged desig- 

 nate the various phases of the gland activity. The process of becoming recharged is not 

 shown. 



