I'll'' rr|;it|(,||s nf HI llucln mil |i;i ;iih| (,||irr cv t (ililaMIIH- cMiistidients ctr. 47'.' 



1)(! stailHMl ill ;i tyiiic;il t;i>liiiili hv citlirr tlic A 11 iii;iiiii inclinai. ! Ih- 

 iron licillillnxyliii iiicllind ;is hmmI hy llcM. m \>\ ;iliy n| llif liiito- 

 clioiKlrijil iiicUkkIs to he ciiiinirr.-iicd >iiI)mm|iiimiI l\ . I''iirt Iiciiik.it. tlic 



erythrosiii-iiictliylciic liliir I(t|iiiÌ(|1ii'. wlicn ;i|i|!liri| t ;iic!-i;il tixc(l 



ill AlliiiaiiiiV lliiid, pdlassiiiiii iiirlinnii.-iic iicciinliiii: to II. 'M. m- in 

 other fixatives suitable i'<ir niilncliomliMa. duo ndi >tain imiIht iH-iirn- 

 somes or mitochondria in a c]iaractcii>tii- mannrr. Tim-, tlir -lainini:- 

 reactions of these bodies are quite (IìIÌltuiii tmni ilmv,. ,,| tjic lod- 

 shaped neurosomes above mentioned. 



The nature of these erythrosin-stained graiuilfs will in- ruusideicd 

 in detail in section 4. 



3. Mitochondria. 



Benda introduced the term "mitochondria" (thread-like jiianules) 

 in 1897 in his paper on the histogenesis of s})ermatozoa. These 

 structures have heretofore been described in adult and enilirydnic 

 nerve cells and have been given a large variety of names: but con- 

 fusion has reigned regarding their relation to otliei' cytoidasniic com- 

 ponents and to mitochondria in other than nerve cells. 



Altmann (1892, p. 52) described them and termed them bioblasts. 

 His technique consisted of staining with acid fuchsin. and. as a result, 

 mitochondria have often been referred to subsequently as fuchsino- 

 phile granules. This term is unfortunate and niisleadini:'. tor tiirloin 

 stains many structures in the nerve cell in addition to niitorhondiia. 

 especially lipoid granules and certain of Hehrs neui'osomes \\lii(li aie 

 not mitochondria (vide infra). An examide of the confusion whieh 

 has arisen from the attempt to identify and interiuet tlu'>e bodies 

 tipon a purely morphological basis is afforded by the number of sup- 

 plementary terms which have been de^■ised and employed to describe 

 them: chondriosomes (granules), chomhiocontes (thread-like graniües). 

 chondriomites (thicker elongated grantiles). and chondriomes i^fusion of 

 a ntimber of granules into a more or less conqtaçt mass\ by Meves 

 1908, Hoven 1910, Duesberg 1910 et al. Samssonow (1910 in sala- 

 mander larvae, and Meves (1910a. p. 650) in leucocytes, have ^ll0Avn 

 that Flemmino-'s tila. Altniann"s u'ranules and the chondriosomes are 



