596 
Proceedings of the Royal Society of Edinburgh. 
THE KEITH, MAKDOUGr ALL-BRISBANE, NEILL, AND 
GUNNING VICTORIA JUBILEE PRIZES. 
The above Prizes will be awarded by the Council in the following manner : — 
I. KEITH PRIZE. 
The Keith Prize, consisting of a Gold Medal and from £40 to £50 in Money, 
will be awarded in the Session 1911-1912 for the “ best communication on a scientific 
subject, communicated,* in the first instance, to the Royal Society during the 
Sessions 1909-1910 and 1910-1911.” Preference will be given to a paper con- 
taining a discovery. 
II. MAKDOTJGALL-BRISBANE PRIZE. 
This Prize is to be awarded biennially by the Council of the Royal Society of 
Edinburgh to such person, for such purposes, for such objects, and in such manner 
as shall appear to them the most conducive to the promotion of the interests of 
science ; with the proviso that the Council shall not be compelled to award the 
Prize unless there shall be some individual engaged in scientific pursuit, or some 
paper written on a scientific subject, or some discovery in science made during the 
biennial period, of sufficient merit or importance in the opinion of the Council to 
be entitled to the Prize. 
1. The Prize, consisting of a Gold Medal and a sum of Money, will be awarded 
at the commencement of the Session 1912-1913, for an Essay or Paper having 
reference to any branch of scientific inquiry, whether Material or Mental. 
2. Competing Essays to be addressed to the Secretary of the Society, and trans- 
mitted not later than 8th July 1912. 
3. The Competition is open to all men of science. 
4. 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. 
5. The Council impose no restriction as to the length of the Essays, which may 
be, at the discretion of the Council, read at the Ordinary Meetings of the Society. 
* For the purposes of this award the word “ communicated” shall be understood to mean the 
date on which the manuscript of a paper is received in its final form for printing, as recorded by 
the General Secretary or other responsible official. 
