ae SS ae Shh  C 
sere 
145 
Transactions of the Royal Society of London, from 1830 to 
1837, inclusive. Vol. III. 1830 to 1837. Presented by the 
same. ; 
Proceedings of the Royal Society of London. Nos. 28, 
29, 30. Presented by the same. 
Journal of the Royal Asiatic Society of Great Britain 
and Ireland. No. 8. Presented by the Society. 
Essays on Unexplained Phenomena. By Graham Hutch- 
inson. Presented by the Author. 
On the Functions of the Cerebellum, by Drs. Gall, Vimont, 
and Broussais. Translated from the French by George 
Combe. Also, Answers to the Objections urged against 
Phrenology by Drs. Roget, Rudolphi, Prichard, and Tiede- 
mann. By George Combe and Dr. A. Combe. 8vo. Edin- 
burgh, 1838. Presented by George Combe, Esq. 
Bulletin de la Société Geologique de France. Tom. IX. 
Feuilles 1—5, 1837 2 1838. Presented by the Society. 
March 26. (Adjourned Meeting.) 
SIR Ws. R. HAMILTON, A. M., President, in the Chair. 
A paper, by Mr. Carroll, on the Motion of the Boomerang, 
was read. In this paper the author seeks to explain the 
properties of the flight of the weapon by assimilating the 
effect of the air’s resistance on it to that exerted upon a flat 
circular disc. 
Professor Lloyd, V. P. made a few observations upon the 
same subject, in which he endeavoured to show that the pe- 
culiar movement of this projectile was but an extreme case 
of acknowledged laws. When a body moves ina resisting 
medium, and when the resultant of all the forces of resis- 
tance, which act upon the several portions of its surface, is 
not contained in the vertical plane of projection, the body 
must deviate from that plane. This is generally the case in 
