APPENDIX—KEITH, BRISBANE, NEILL, AND GUNNING PRIZES. 903 
16TH Brennrau Periop, 1857-59.—Not awarded. 
17TH Brenna Pertop, 1859-61.—Joun Attan Broun, Hsq., F.R.S., Director of the Trevandrum 
Observatory, for his papers “on the Horizontal Force of the 
Earth’s Magnetism, on the Correction of the Bitilar Magnet- 
ometer, and on Terrestrial Magnetism generally,” published in 
the Transactions of the Society. 
18TH Brenniat Periop, 1861—63.—Professor WiLL1am THomson, of the University of Glasgow, for his 
Communication “on some Kinematical and Dynamical 
Theorems.” 
Principal Forses, St Andrews, for his “ Experimental Inquiry into 
the Laws of Conduction of Heat in Iron Bars,” published in 
the Transactions of the Society. 
20TH Brenniau Prriop, 1865—67.—Professor C. Prazzt Smyvs, for his paper “on Recent Measures at 
the Great Pyramid,” published in the Transactions of the 
Society. 
21st Brenntau Periop, 1867-—69.—Professor P. G. Tarr, for his paper “on the Rotation of a Rigid 
Body: about a Fixed Point,’ published in the Transactions of 
the Society. 
22ND Biennrat Parton, 1869—71.—Professor CLerK Maxwetu, for his paper “on Figures, Frames, 
and Diagrams of Forces,” published in the Transactions of the 
Society. 
23RD BrennraL Psriop, 1871—73.—Professor P. G. Tair, for his paper entitled “ First Approximation 
to a Thermo-electrie Diagram,” published in the Transactions 
of the Society. 
247H BienniaL Periop, 1873—75.—Professor Crum Brown, for his Researches ‘‘ on the Sense of Rota- 
tion, and on the Anatomical Relations of the Semicircular 
Canals of the Internal Ear.” 
25TH Biennial Periop, 1875—77.—Professor M. Forstsr Heppue, for his papers “on the Rhom- 
bohedral Carbonates,’ and “on the Felspars of Scotland,” 
published in the Transactions of the Society. 
26TH BienniaL Periop, 1877—79.—Professor H. C. FLeemine JENKIN, for his paper “on the Appli- 
cation of Graphic Methods to the Determination of the Efii- 
ciency of Machinery,” published in the Transactions of the 
Society; Part II. having appeared in the volume for 1877-78 
277TH BienntaL Periop, 1879—81.—Professor Grorcn Curysrat, for his paper “on the teen 
Telephone,” published in the Transactions of the Society. 
28rH Brenniat Periop, 1881—83.—TuHomas Muir, Esq., LL.D., for his “ Researches into the Theory 
of Determinants and Continued Fractions,” published in the 
Proceedings of the Society. 
297H BiennraL PERiop, 1883- 85.—Joun AITKEN, Esq., for his paper “on the Formation of Small 
Clear Spaces in Dusty Air,” and for previous papers on 
Atmospheric Phenomena, published in the Transactions of 
the Society. 
30TH BrennraL Period, 1885-87.—JoHn Youne Bucuanan, Esq., for a series of Communications, 
extending over several years, on subjects connected with 
Ocean Circulation, Compressibility of Glass, &c.; two of 
which, viz., “On Ice and Brines,’ and “On the Distribution 
of Temperature in the Antarctic Ocean,” have been published 
in the Proceedings of the Society. 
31st BrenniaL Periop, 1887—89.—Professor E. A. Lurrs, for his papers on the Organic Compounds 
ot Phosphorus, p:ablished in the Transactions of the Society. 
32ND BrenniaL Periop, 1889-91.—R. T. Omonn, Esq., for his Contributions to Meteorological Science, 
many of which are contained in Vol. XXXIV. of the 
Society’s Transactions. 
53RD BiennraL Prrtop, 1891—-93.—Professor THomas R. Frasmr, F.R.S., for his papers on Strophan- 
thus hispidus, Strophanthin, and Strophanthidin, read to the 
Society in February and June 1889 and in December 1891, 
and printed in Vols. XXXV., XXXVI., and XXXVILI. of 
the Society’s Transactions. 
197 BrenntaL Periop, 1863-65. 
