bo fe 
PRESIDENTIAL ADDRESS. 97 
Large-celled Sarcoma.—November 18th, 1910.—Soft 
erowths over the right chest and in both thighs, showing 
very large irregular cells closely packed together. 
In £. norvegicus var. albina (Tame white rat) : 
Ossifying sarcoma (?).—There were small irregular car- 
tilaginous to calcified nodules in both lungs, in the thymus, 
over the pleure and ribs, in the pectoral muscles and the 
inner muscles of the thighs, attached to one femur, and near 
the vertebral column in the neighbourhood of the kidneys 
and invading these. 
In Epimys rattus: Carcinoma of Kidney.—June, 1910. 
In Mus musculus: Carcinoma of the Mammary Gland.— 
April 5th, 1911, Narrabri (Dr. Barton). Extensive irregu- 
lar nodular growths of the right mammary gland and ad- 
jacent part of the neck. 
Carcinoma of the Mammary Gland.—June 8th, 1911, 
Inverell. Irregular growths the size of half-walnuts in 
front of the left shoulder, on the right side of the chest, 
and in the left groin. 
Carcinoma of a Salivary Gland or perhaps a Mammary 
Gland.—October 23rd, 1916. Carcinomatous deposits, sug- 
gestive of a possible origin in a Salivary gland, were found 
between the right ear and shoulder (size of a small marble), 
in the left side in the same situation, and in both groins. 
The following innocent cyst has been met with in E'pimys 
rattus:—Multiocular Ovarian Cyst.—September 14th, 
1909. Size of a walnut. 
MALIGNANT GROWTHS IN OTHER ANIMALS. 
It may be of interest, for comparison with the preceding, 
to record here the various malignant growths I have met 
with in other animals in this State from 1909 up to the 
present. The occurrence of such growths in so many species 
suggests that no vertebrates are exempt from them. The 
G—May 1, 1918, 
