MALARIAL FEVER. 



519 



I. The Spores or Enhcevwspores (Lankester) are the youngest and 

 smallest forms resulting from the segmentation of the adult araoebula or 

 sporocyte. They are of round or oval shape and of small size usually 



/ 



cf^o 



Fig. 163. 



Fig. 164. 



Fig. 165. 



Fig. 167. Fig. 168. 



Figs. 163-168. — Exemplifying phases of the malignant parasite. 



Fig. 163. Two small ring-shaped amcebulae witliin the red corpuscles. Fig. 164, A "crescent" 

 or gamete showing the envelope of the red corpuscles", also an amoebula. Figs. 165-168 illustrate the 

 changes in form undergone by the crescents outside the body- In the interior of the spherical form in 

 Fig. 167 evidence of the flagella can be seen. Fig. 168. A male gamete which has undergone exflagella- 

 tion, showing the thread-like microgametocytes or spermatozoa attached at the periphery, x 1000. 

 (The figures in this plate are from preparations kindly lent by Dr. Manson.) 



not exceeding 2 /i in diameter ; the size, however, varies somewhat in 

 the different types of fever. A nucleus and peripheral protoplasm can 



