HUMANE TREATMENT OF ANIMALS USED IN RESEARCH 131 
Section I - Animal Procurement and Use 
The proper evaluation of an institutional animal 
care program must take into account the size of the insti- 
tution and the number of laboratory animals involved in its 
research, teaching and service programs. Tables 1-4 list 
the numbers, sources of supply and categories of use of 
animals in the institutions surveyed. 
Table 1 indicates the total numbers of animals 
used during 1960 by 57 of the 58 institutions examined. 
Table 2 is a summary of laboratory animal utilization clas- 
sified according to the type of nonprofit research insti- 
tution. 
The sources of animals used in 55 of the insti- 
tutions are listed in Table 3. They are divided according 
to whether the animals are bred within the user institution, 
obtained from commercial or academic sources, or collected 
from nature. The large number of dogs and cats obtained 
from pounds demonstrates the importance of this source to 
research institutions. In addition, many of the dogs and 
cats reported as "purchased commercially" were apparently 
purchased from municipal pounds. The large proportion of 
primates collected from nature is largely the result of di- 
rect collection of primates in Africa by one institution. 
Table 4 indicates that a high percentage of the 
animals are used for research, and lesser percentages are 
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