MALARIA. 



223 



produced by several generations of one of those two forms of 

 parasites going through their life-cycles beginning at differ- 

 ent times and on successive days, so that the fever has the 

 appearance of a quotidian (Fig. 76) form of fever. The three 

 different varieties of parasites will be best understood by re- 

 ferring to Figs. 70 to 76. 



FIG. 70. 



Tertian malarial plasmodium: 1, Hyaline form; 2, pigmented ring , , 



pigmented forms; 7, segmenting forms; 8, flagellate form (microgametocyte) ; 9, 

 non-flatrellate form (macrosametc) : 10. segmenting form after destruc" 



form; 3-6, 



juKiutuiiuu minis, /, segmciiiuJK lurms ; o, imgeimie lunu (.imcrogumetocyte) ; 9, 

 non-flagellate form (macrogamete) ; 10, segmenting form after destruction of red 

 corpuscles. 



Examination of the Blood of Man for Diagnostic Purposes. 

 The following two methods always serre best : (1) the fresh 

 blood examination and (2) the examination of stained speci- 

 mens. Whenever practicable, fresh blood examination offers 

 the easiest and best method for diagnosis. 



The technic is as follows : Thoroughly clean cover-glasses 

 and slides, being careful to remove all greasy matter. Cleanse 

 also the skin of the lobe of the ear or tip of a finger, make 

 an incision with a sharp-pointed knife, wipe off the first 



