TWENTY MONTHS OF STARVATION IN AMIA CALVA. 



463 



nuclei are round and that the chromatin granules are uniformly 

 scattered. A conspicuous nucleolus is present in nearly every 

 one. The size and general appearance of these nuclei lead me to 

 conclude that the condition of the cytoplasm is also normally 

 fixed. The presence of large clear areas filled with sap is what 

 is found when the living starved nerve cell is studied. It is inter- 

 esting to note that both of these cells were able to do their normal 



\- 



FIG. 5. Microphotograph of motor nerve cells of the tenth nerve. 



fication 258 X. 



Magni- 



work although in an apparent state of almost complete inanition. 

 Many of the cells showed only about one-half of the normal 

 amount of cytoplasm. It is also evident from these two micro- 

 photographs that there is no constant morphological difference 

 between the sensory cells that had had a long rest and the motor 

 cells that had been constantly working. In fact so far as I can 

 determine there is no constant structural difference between 

 any of the nerve centers associated with the respiratory reflexes. 

 The fish utilized nearly its entire body muscles in order to supply 

 food energy to the nervous system. This energy while not 

 entirely adequate appears to have been generally distributed 



