362 DISEASE IN WILD MAMMALS AND BIRDS 
lism of a growdng boy, a case after parathyroidectomy and 
a case of osteitis deformans, and suggests that this de- 
pends in some way either on the absence or perversion of 
some internal secretion, possibly of the parathyroids, 
which controls calcium exchange in the body. Substances 
from some cause arise which have the power to abstract 
calcium from the body tissues, the abstraction of these 
salts being the first step in the production of the disease. 
The example which is reported in full was the first to 
be encountered in our 5,365 autopsies but shortly after 
this series was concluded two more came to autopsy and 
Dr. Corson- Wliite's studies were made to embrace these. 
A reddish woolly monkey {Lagothrix infumatus) 
received November 25, 1919, was a particularly active 
specimen and as far as we could determine a perfectly 
healthy adult animal. He passed the tuberculin test and 
was placed on exhibition. In April, 1920, he was first 
reported as crippled and was removed to the laboratory in 
June, 1920. At that time the long bones of the legs and 
arms were bowed anteriorly and laterally, the degree of 
curvature making the hands and feet seem disconnected. 
The monkey could stand but made no voluntary effort to 
do so. There was evidently some pain although it could 
not have been at all severe. He resented handling, 
especially of his arms and legs. The head was rounded, 
resembling that of a baby, and the eyes were protuberant 
suggesting an exophthalmos. The maxillary bones were 
so excessively thick that the mouth could not close and 
the monkey drooled saliva. His blood on admission to the 
infirmary in j\Iay was — Hg eighty-nine per cent., R. B. C. 
4,370,000, W. B. C. 5,800; one week before death it was 
Hg fifty-four per cent., R. B. C. 2,860,000, W. B. C. 6,000. 
Routine urine examination showed a constant trace of 
albumin, hyaline and granular casts. There was at no 
time a Bence-Jones protein reaction, excess of indican, 
indol, or diacetic acid. He had a constant slight diarrhoea 
with some flatulence, the semi-fluid, constantly acid feces 
