212 
from febrile attacks— 5 (or 50 per cent of them) yielding conclusive 
evidence of infection by M. melitensis. 
In Report No. 5 of the commission is an article by Major Horroks 
on Mediterranean fever in Gibraltar. The facts there detailed, taken 
with the curve showing the relation of the number of goats in 
1884 ’85 ’87 ’88 ’89 ’90 ’91 ’9Z ’93 ’94 ’95 ’96 ’97 ’98 ’99 I900’0) ’02. '03 '04 ’05 
= No . of goats* Each square equals 80 goats. 
= Malta fever. " " ” 40 cases. 
Gibraltar to the number of cases of Malta fever, is particularly 
interesting and suggestive. With the reduction in the number of 
goats in Gibraltar there was also a decrease in the number of cases 
of Malta fever, so that finally when the number of goats had de- 
creased to about 200 in 1905, Malta fever has practically disappeared. 
