559 
Of the Edentata and Monotremata I have, as yet, had no oppor- 
tunity of dissecting any specimens. 
Of the Marsupialia, through Professor Goodsir’s kindness, I have 
been enabled to examine two brains of the kangaroo ( Macropus ). 
Although these brains had been for some time in spirit, and had 
evidently to some extent lost their original form, yet it was possible 
to distinguish in them the tentorial and occipital surfaces of the 
cerebellum, and to note that the cerebrum had to the former a rela- 
tion corresponding to that which had been noted in the mammals 
already described. In the kangaroo, therefore, the exposed surface 
of the cerebellum is the occipital. The corpora quadrigerrtina 
could not be seen until the cerebral hemispheres were drawn to one 
side. 
(The paper was illustrated by crania, casts, photographs, and 
drawings. The drawings were made by Dr Henry S. Wilson, and, 
to ensure accuracy of form, proportion, and relation, their outlines 
were taken with the assistance of a camera.) 
3c On the Connection between Organic Force and Crystalline 
Force. By H. F. Baxter, Esq. 
The following Donations to the Library were announced : — 
Neue Denkscliriften der allgemeinen schweizerischen Gesellschaft 
fur die gesammten Naturwissenschaften. Zurich. Bander XVII. 
und XVIII. 1860-61. 4to. — From the Society . 
Mittheilungen der naturforschenden Gesellschaft in Bern, aus 
dem Jahre 1858. No. 408-423, No. 424-439, No. 440-468. 
8vo. — From the Society. 
Verhandlungen der schweizerischen naturforschenden Gesellschaft 
bei ihrer 43-ten Versammlung in Bern den 2, 3, und 4, August 
1858. 8 vo. — From the Society. 
Atti della Societa Elvetica delle Scienze Naturali riunita in 
Lugano nei Giorni 11, 12, e 13 settembre 1860, Sessione 44 a . 
8vo. — From the Society. 
Sitzungsberichte der Wissenschaften zu Miinchen, 1861. I. 
Heft V. 8vo. — From the Academy . 
The Journal of the Chemical Society. No. LVIII. 1862. 8vo. 
— From the Society. 
