12 
other animals, and to renewing some of the old and outworn 
structures, such as the prairie dog fence, the stream for 
wading birds, the stream for water-fowl and the lower seal 
pond. These expenditures have added much to the ap- 
pearance and to the facilities of the Garden. 
The Zebra House, erected in 1905, was completed so late 
in the year that it was thought best not to install the animals 
until spring. The zebras and Persian asses were placed in 
it on April 18th. It w^as found during the recent winter 
that, though the asses were sufficiently hardy, the zebras 
could not endure severely wcold eather. Temporary pro- 
vision w^as made by placing a stove in the building, but the 
experience makes it clear that a small heating plant is re- 
quired to keep the temperature of the building above freezing 
point. 
Disappointment has been met with in the effort to fill up 
the Monkey House to something Uke its former standard. 
Few of the rarer species have been offered for sale and even 
the more common kinds have been relatively scarce. 
The tuberculin test now applied to every monkey which 
reaches the Gardens, has for the most part given definite 
results, but it has shown that quite one-half of the monkeys 
received are already diseased and do not get beyond the 
Pathological Laboratory. 
It will be instructive to note the small percentage of 
error which has been found in our use of this test upon 
monkeys. In every case where the temperature reaction 
was considered to be definitely bad, autopsy has shown the 
presence of the disease. In others, where the temperature 
chart seemed of doubtful significance, and the animals were 
sacrificed to gain necessary light, it was present in all but two 
cases. 
It can not of course be asserted that in no case has a 
tuberculous monkey failed to react, but there is little reason to 
suspect that this has occurred, and in any event such cases 
are certainly very few. 
Among lemurs the reaction seems less definite, but the 
comparatively small number as yet treated leaves the ques- 
tion open to further observation. 
