698 APPENDIX.—KEITH, MAKDOUGALL BRISBANE, AND NEILL PRIZES. 
157TH Brenniau Pertop, 1855-57 —Professor Boots, for his Memoir “on the Application of the Theory 
of Probabilities to Questions of the Combination of Testimonies 
and Judgments,” published in the Transactions of the Society. 
167TH BrenniAt Periop, 1857—59.—Not awarded. 
177TH BrenniaL Periop, 1859-61.—Joun Atztan Brovun, Esq., 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 Bifilar Magnet- 
ometer, and on Terrestrial Magnetism generally,” published in 
the Transactions of the Society. 
18tH Brenniat Perron, 1861—63.—Professor WiLL1am THomson, of the University of Glasgow, for his 
Communication ‘‘on some Kinematical and Dynamical 
Theorems,” published in the Transactions of the Society. 
197m BrenniaL Periop, 1863—65.—Principal Fores, St Andrews, for his “Experimental Inquiry into 
the Laws of Conduction of Heat in Iron Bars,” published in 
the Transactions of the Society, 
207TH Brenntau Periop, 1865—67.—Professor C. Piszzi Smyva, for his paper “on Recent Measures at 
the Great Pyramid,’ published in the Transactions of the 
Society. 
21st Brenniat Pertop, 1867—69.—Professor P. G. Tart, for his paper “ on the Rotation of a Rigid 
Body about a Fixed Point,” published in the Transactions of 
the Society. 
22p BrenntaL Pertiop, 1869—71.—Professor Crerk Maxwet1, for his paper “ on Figures, Frames, 
and Diagrams of Forces,” published in the Transactions of the 
Society. 
23p BrenniaL Pertop, 1871-73.—Professor P. G. Tarr for his paper entitled “ First Approximation 
to a Thermo-electric Diagram,” published in the Transactions 
of the Society. 
247H Bienntat Periop, 1837—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.” 

Il. MAKDOUGALL BRISBANE PRIZE. 
lst BreyntAt Periop, 1859.—Sir Roprerick Impey Murcuison, on account of his Contributions to 
the Geology of Scotland. 
2p Bienniat Periop, 1860—62.—Winuiam Sevier, M.D., F.R.C.P.E., for his “‘ Memoir of the Life 
and Writings of Dr Robert Whytt,” published in the Trans- 
actions of the Society. 
3p BrenniaL Periop, 1862~—64.—Joun Drnis Macponatp, Esq., R.N., F.R.S., Surgeon of H.M.S. 
“Tearus,” for his paper “on the Representive Relationships 
of the Fixed and Free Tunicata, regarded as Two Sub-classes 
of equivalent value; with some General Remarks on their 
Morphology,” published in the Transactions of the Society. 
47H Bienniau Periop, 1864—66.—Not awarded. 
5rH BrenniaL Periop, 1866-68.—Dr ALexanprR Crum Brown and Dr Tuomas RicHarp Fraser, for 
their conjoint paper “on the Connection between Chemical 
Constitution and Physiological Action,” published in the 
Transactions of the Society. 
