MITOCHONDRIA IN VERTEBRATE NERVE CELLS 5 



He clearly showed their mdependence of the Nissl substance by 

 counterstaining with toluidin blue, so that in the same cell the 

 granules of Altmann were colored red and the Nissl substance 

 blue. The fixation and staining reactions of these Altmann 

 granules, together with their rod-like form and cytoplasmic dis- 

 tribution, show that they are in truth mitochondria. 



Canis 



Lobenhoffer ('06, p. 491) also found bodies, which he likewise 

 termed Altmann's granules, in the cells of the spinal cord, brain 

 and retina of the dog. I have no hesitation whatever in calHng 

 these granules mitochondria since they correspond very closely 

 with mitochondria which I have observed in the cells of the 

 Gasserian ganglion of the dog by Bensley's anilin fuchsin methyl 

 green technique. 



Gallus 



Duesberg ('10, p. 612) recorded chondriosomes (mitochondria) 

 in adult ganglion cells (spinal?) by the Benda method. He 

 states, however, on the same page, that no elements stainable 

 by the Benda method occur in the adult nerve fiber. 



I have found, by the application of Bensley's anilin fuchsin 

 methyl green method, that mitochondria are very abundant in 

 the cell bodies and medullated processes of adult spinal ganglion 

 cells of the fowl. 



Columba 



I have already demonstrated, in a previous paper ('12, p. 497), 

 that mitochondria occur in adult spinal ganglion cells of the 

 pigeon. 



Testudo graeca 



Busana ('12, p. 621) studied granules and rods, which he 

 styled mitochondria, in the cells of the spinal ganglia, cord, 

 medulla, optic lobes and cerebellum by means of the Regaud 

 method, as modified by Luna, and the Benda method. They 

 presented different characteristics in the large and in the small 



