* 
THE KEITH, BRISBANE AND NEILL PRIZES. 
The above Prizes will be awarded by the Council in the following manner :— 
KEITH PRIZE. 
The Kerra Prize, consisting of a Gold Medal and from £40 to £50 in Money, 
will be awarded early next Session (1857-8), for “the best communication on a 
scientific subject, communicated, in the first instance, to the Royal Society dur- 
ing the Sessions 1855-6 and 1856-7.” Preference will be given to a paper con- 
taining a discovery. 
MAKDOUGALL BRISBANE PRIZE. 
This Prize, consisting of a Gold Medal and a sum of Money, will be awarded 
before the close of the Session 1858-9, under the following conditions :— 
1. Competing Essays are to be addressed to the Secretary of the Society on 
or before Ist February 1859. 
2. The competition is open to all men of science. 
3. The Essays may be either anonymous or otherwise. In the former case, 
they must be distinguished by mottoes, with corresponding sealed billets super- 
scribed with the same motto, and containing the name of the Author. 
4. The subject proposed by the Council for the Prize of 1856-57 is the fol- 
lowing :— 
A Biograpuican Notice or A SCOTCHMAN EMINENT IN SCIENCE; including an 
estimate of the influence and importance of his writings and discoveries. As 
instances of such Biographies which still remain to be supplied, the Council 
would specify the following names: Sir Ropert SreBap, Sir ANDREW Ba.trour, 
Mactaurin, Buack, Monro Primus and Secundus; several of the family of 
Grecory, Sir James Hat, Jameson. The earlier volumes of the Transactions 
