31 
few scattered bacilli. Why these lesions did not give a 
reaction is difficult to say since I have seen as minute a 
focus give a pronounced temperature variation (C. Y. 
White and H. Fox, Rept. VII, Tuberculosis Cong., 1908, 
V. IV). 
At all events Red Monkey No. 21 come from bad 
monkeys, had been associated with infected animals 
and was in the same cage as four of the monkeys dying 
with tuberculosis this year. We are satisfied at having 
sacrificed him, although deaths from this disease con- 
tinued up to December 19th. His death certainly re- 
moved one source of infection. All the deaths cannot 
be satisfactorily explained, but four of the list this year 
were associated with Red Monkey No. 21. Only in 
one case does it seem probable that a more rigid inter- 
pretation of the temperature chart would have held the 
animal in quarantine. No deaths from tuberculosis have 
occurred since 12/19/11. We have interpreted the last 
series of charts very rigidly and held up, in one case four 
times, the transfer to exhibition cages when the charts 
were unsatisfactory. There are no monkeys in the 
laboratory building at the end of the year. Four of the 
seven monkeys showing tuberculosis were killed very 
shortly after injection, the remaining three either dying 
or being killed some time later. I shall give a short his- 
tory of each of the twelve tuberculous animals. 
Our rather disappointing experience this year indicates 
three things to me very clearly. First slightly larger 
doses among macaques and baboons are advisable. 
Secondly, all charts must be viewed very critically and 
no irregularities allowed to pass. Thirdly, and most 
important, it is advisable to test the whole group of 
monkeys at least every two years. It would not be a 
bad thing to do it every year but this would require un- 
limited resources. Great care is being taken with the 
feeding of the animals and cleaning of their cages. 
Separate utensils are used for each monkey. Thermom- 
eters are soaked in bichloride solution between usings. 
All animals are washed with soap and water and rinsed 
