Transmission of East Coast Fever by Ticks. 
325 
1145 in order to test their infectivity (vide Experiment No. 1 "C," Nos. 25 
and 26). 
16. Ox 621 was rendered immune by inoculation {vide above). 
Infested on July 2, 1910, with brown nymphae off Cattle 700, 923, and 
917 (Eef. Nos. 309, 268, and 335). 
Note. — The engorged nymphae were collected w^ithin the usual time, 
and moulted into adults on September 19, 1910 ; the adults were later 
placed on Cattle 1088 and 1145 to test their infectivity {vide Experiment 
No. 1 C," Nos. 25 and 26). 
17. Heifer 895 was rendered immune by inoculation. 
Infested on July 2, 1910, with brown nymphae off Cattle 700, 923, and 
917 (Eef. Nos. 309, 268, and 335). 
Note. — The engorged nymphae were collected from July 4 to 14, 1910, 
and moulted into adults on September 19, 1910 ; they were later placed 
on Cattle 1088 and 1145 in order to test their infectivity {vide Experiment 
No. 1 " C," Nos. 25 and 26). 
18. Heifer 836 was rendered immune by inoculation {vide above). 
Infected on July 2, 1910, with brown nymphae off Cattle 700, 923, and 
917 (Eef. Nos. 309, 268, and 335). 
Note. — The engorged nymphae were collected from July 4 to 14, 1910, 
and moulted into adults on September 19, 1910; they were later placed on 
Cattle 1088 and 1145 in order to test their infectivity {vide Experiment 
No. 1 C," Nos. 25 and 26). 
19. Cow 679 was rendered immune by inoculation {vide above). 
Infested on July 2, 1910, with brown nymphae off Cattle 700, 923, and 
917 (Eef. Nos. 309, 268, and 335). 
Note. — The engorged nymphas were collected from July 4 to 14, 1910, 
and moulted into adults on September 19, 1910. In order to test their 
infectivity they were placed on Cattle 1088 and 1145 {vide Experiment 
No. 1 C," Nos. 25 and 26). 
20. Bull rendered immune by inoculation {vide above). 
Infested on July 2, 1910, with brown nymphae off Cattle 700, 923, and 
917 (Eef. Nos. 309, 268, and 335). 
Note. — The engorged nymphae were collected from July 4 to 14, 1910, 
and moulted into adults on September 19, 1910 ; later in order to test 
infectivity they were placed on Cattle 1088 and 1145 {vide Experiment 
No. 1 ''C," Nos. 25 and 26). 
