518 



APPENDIX C. 



the fully developed araoebute before sporulation, whereas in the malig- 

 nant type they have a characteristic crescent-like or sausage-shaped 

 form; hence they are often spoken of as " crescentic bodies." 



/ 



M^ lO 



\ 



i^' 



Fig. 158. 



/ 



Fig. 159. 



Fig. 160. 



*-• ••V 



• \ 



^. 





Fig. 162. 

 -Various phases of the benign tertian parasite. 



Fig, 157. Several young ring-shaped amccbnlae within the red corpuscles, one of the latter en- 

 larged and showing a dotted appearance. Fig. 158. A larger amosbula containing pigment granules. 

 Fig. 159. Two large ama:bulas, exemplifying the great variation in form. Fig. 160. Large amcebulae 

 assuming the spherical form andshowing isolated fragments of chromatin — preparatory to sporulation. 

 Fig. 161. Sporocyte, which has produced eighteen spores, each of which contains a small collection of 

 chromatin. Fig. 162, A number of spores which have just been set free in the plasma, x 1000. 



The various forms of the parasite seen in the human blood may now 

 be described more in detail. 



