E. V. COWDRY 



fuse, continuous deposit instead of in the form of granules and 

 flakes of various size and shape. I have received valuable help 

 from my father in this work, for which I am very thankful. 



LITERATURE 



I have prepared the following summary so that what we know 

 of the comparative distribution of mitochondria in vertebrate 

 nerve cells may be seen at a glance. In it, the forms in which 

 mitochondria are described by me for the first time, are given 

 in italics, the others being recorded in plain type: 



The evidence which these investigators have presented will 

 now be considered. 



Guinea-pig 



Nageotte ('09 a, p. 472) demonstrated certain bacilli-like bodies 

 in peripheral nerve fibers fixed in Tellyesniczky's bichromate 

 acetic fluid and stained with Altmann's anilin fuchsin. He found 

 them also after preUminary fixation in 10 per cent formalin fol- 

 lowed by Tellyesniczky's fluid and staining in the same way. 



2 Collin ('13, p. 1123) has recorded the occurrence of mitochondria in the 

 neuroglia cells of the spinal cord of man. 



