PLATE 3 



EXPLANATION OF FIGURES 



8 Photomicrograph of teased preparation of nervus iscliiadicus of fowl No. 

 78 — dry gangrene in left leg which had been bandaged for 24 hours 28 days be- 

 fore death. Slender embryonic nerve fibers with numerous spindle-shaped nuclei 

 have entirely replaced the meduUated fibers. Delafield's hemato.xylin, Zeiss 

 4X2 mm. oil immersion. 



9 Photomicrograph of embryonic nerve fibers in the nervus ischiadicus of 

 fowl No. 17, G — 60 days on polished rice and calcium lactate. Delafield's hema- 

 toxylin. Zeiss 4X2 mm. oil immersion. 



10 Embryonic nerve fiber from the same nerve as figure 9. Droplets of 

 degenerated myelin are seen at m. Delafield's hematoxylin. X 255. 



11 Embryoni • nerve fiber from a teased preparation of the nervus ischi- 

 adicus of fowl No. 9, G — 52 days on polished rice and calcium lactate; droplets 

 of degenerated myelin are seen at/; n, nucleus. Delafield's hematoxylin. X 250. 



12 Fiber of the nervus ischiadicus of fowl No. 14, showing infiltration by 

 numerous wandering cells. S is a nucleus of the neurilemma sheath. Dela- 

 field's hematoxylin. X 125. 



100 



