2
plentiful in the fetus and
newborn than in the adult
animal. On November 16th
the idea presented itself that
by making an extract from
the pancreas of fetal calves
we might obtain, large
quantities of the internal
secretion, free from
destroying influence of pan-
creatic juice. This was done
and to our great satisfaction
the blood sugar percentage
of a diabetic dog was
reduced from .30 o normal
(.09) and the urine became