210 Proceedings of the Royal Society of Edinburgh. 
[Sess. 
THE KEITH, MAKDOUGALL-BRISBANE, NEILL, GUNNING 
VICTORIA JUBILEE, AND JAMES SCOTT 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 1921-1922 for the “ best communication on a scientific 
subject, communicated,* in the first instance, to the Royal Society of Edinburgh 
during the Sessions 1919-1920 and 1920-1921.” Preference will be given to a 
paper containing a discovery. 
II. MAKDOUGALL-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 
before the close of the Session 1922-1923, 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 1922. 
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. 
They wish also to leave the property and free disposal of the manuscripts to the 
Authors; a copy, however, being deposited in the Archives of the Society, unless 
the paper shall be published in the Transactions. 
* 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 Genera] Secretary or other responsible official. 
