LIST OF ILLUSTRATIONS 



FACING PAGE 



MATOPO - - - 84 



TUNDRA (AN ICELAND PONY), HER FOAL, CIRCUS GIRL (BORN 

 1898), AND HER HYBRID-FOAL, SIR JOHN (BY MATOPO), 

 WHEN A MONTH OLD (BORN 1899) - - 86 



ROMULUS - 92 



MATOPO - - 92 



ROMULUS - - 96 



FIG. I. THE PARASITE OF TERTIAN FEVER, H^MAMCEBA VIVAX 



(ROSS). HIGHLY MAGNIFIED - 136 



FIG. 2. VARIOUS STAGES WHICH THE PARASITE OF THE /ESTIVO- 

 AUTUMNAL FEVER, H/EMOMENAS PR^ECOX (ROSS), PASSES 

 THROUGH IN THE BODY OF THE MOSQUITO ANOPHELES. 

 MAGNIFIED 2,OOO TIMES. AFTER ROSS AND FIELDING- 

 OULD - - 136 



FIG. 3. FORMATION OF THE BLASTS OF H^EMOMENAS PR^ECOX 

 (ROSS) WITHIN THE BODY OF THE MOSQUITO ANOPHELES. 

 MAGNIFIED 2,OOO TIMES. AFTER ROSS AND FIELDING- 

 OULD - - 144 



ANOPHELES MACULIPENNIS. MALE, IN CHARACTERISTIC 



ATTITUDE * - 146 



ANOPHELES MACULIPENNIS. FEMALE - - - - 146 



XI 



