290 
Tick Paralysis 
Day 
4 Temperature : M. 102'7° F., E. 103° F. Put on one more ? and one S 
collected from bear by J. W. Frank, Creston, British Columbia. These 
ticks were placed on the neck. Two ? s attached themselves to the 
lumbar region, one j on the side of the head, and one ? on the 
sternum. 
5 Temperature : M. 102'8° F. 
6 Temperature: M. 102-5° F., E. 102-8° F. 
7 Temperature: E. 103-6°F. Lamb well in morning; at 9 p.m. showed some 
loss of coordination ; bumped into obstacles when moving about. 
8 Temperature ; M. 102-8° F., E. 103-4° F. Paralysis advancing, struggles a 
good deal; if braced could just stand in morning. The two ?s 
attached in the lumbar region ; all parts posterior seemed to be most 
affected. The lamb threw his hind parts in the air, though later in the 
day paralysis was almost complete except for the head and neck. Lamb 
wild-eyed and restless, appetite diminished; one ? fell off. PI. XXII, 
fig. 5. 
9 Lamb could just stand in morning; much improved in afternoon; stood 
more easily and could stop flow of urine. One ? dropped off; two ? s 
and one d removed. 
10 Lamb much better. Appetite improved ; still unsafe on hind legs. 
11 Lamb well, except for slight crouch when walking. 
12-27 Lamb recovered completely. Killed on day 27 ; all organs appeared normal. 
Tick-transmission experiment (5-13 v, 1913). 
Lamb No. IV. 
1 Put eight ? s and two t? s on lamb’s back. 
2 Temperature : M. 103-2° F. 
3 Temperature: M. 101-2° F., E. 103° F. 
4 Temperature: M. 102-9° F., E. 102-8° F. Two ?s and one d found 
attached along back. 
5 Temperature : M. 102° F. 
6 Temperature : M. 101° F., E. 102° F. 
7 Temperature : M. 102-8° F. 
8 In the morning the lamb showed weakness ; in the evening it bumped 
into everything. Lamb off its feed. Temperature: M. 102-2° F., 
E. 102-4° F. PI. XXII, fig. 6. 
9 Lamb could hardly stand, incontinence of urine; in evening was unable to 
stand unless assisted. One J fell off gorged. 
Autopsy. Lamb killed at 9 p.m. by bleeding. All organs normal. The 
coverings of the brain were distinctly injected. 
Note. Blood counts (differential) made before and after paralysis appeared showed no 
variation from the normal. 
The temperatures recorded in the tick-transmission experiments are quite within the 
normal range for lambs. 
