Abstract
The suprarenal weight of rats was measured at various conditions, that is, in one series during pregnant-lactating, during non-pregnant-lactating, and in another series at oestrus and at dioestrus. Autopsy was carefully conducted.
Lung infection, particularly middle ear infection was found in a vast number of rats investigated; the morbidity rate was consulted as over the half of cases (56 p. c.). Parasite cyst in the liver and tape-worm in intestines were found also frequently.
Such pathological conditions were not found to have any influence upon the suprarenal weight.
The weight of the suprarenal capsule is greater in the rat preg-nant-lactating in comparison to the non-pregnant-lactating and it is especially so in the latter half of the pregnancy and in the former half of suckling. This conclusion holds true for both the wholly healthy rat, and the rat holding some pathological conditions.
The weight of the suprarenal capsule is slightly but definitely greater at oestrus than at dioestrus.
