IV 
CONTENTS. 
Page. 
South Florida notes, W. H. Dali, {Title only) _ 16 
Depth of earthquake foci, C. E. Dutton_ 17 
Manchester meeting of the British Association for the advance¬ 
ment of Science, 1887, F. W. Clarke, {Title only) _ 19 
Signal Service bibliography of meteorology, C. Abbe_ 20 
Geographical distribution of fossil plants, L. F. Ward, {Title 
only) -:- 28 
Speed of propagation of the Charleston earthquake, C. E. 
Dutton and Simon Newcomb, {Title only) _ 28 
Kepresentation of comet orbits by models, William Darkness, 
(Title only) --- 28 
Statistics of the Philosophical Society, G. K. Gilbert_ 29 
Newton’s vis, M. H. Doolittle, {Title only) __ 38 
Keference indexing, B: Pickman Mann_ 38 
Presentation of the annual address-- 39 
Annual meeting- 39 
Proceedings at the Baird memorial meeting__ 41 
Introduction _ 43 
Kelation of Professor Baird to participating societies, Garrick 
Mallery- 45 
Professor Baird as administrator, Wm. B. Taylor_ 49 
Professor Baird in science, W. H. Dali_ 61 
Personal characteristics of Professor Baird, J. W. Powell_ 71 
Bulletin of the Mathematical Section _ 79 
Standing rules of the section_._ 81 
List of officers and members of the section_ 82 
Association ratios, M. H. Doolittle_:_ 83 
The rotten apple problem, a question in probabilities, Marcus 
Baker, M. H. Doolittle, G.W. Hill, G. E. Curtis, E. B. Elliott, 
Henry Farquhar, Artemas Martin, Alex. S. Christie, Ormond 
Stone __ 87-89 
Free cooling of a homogeneous sphere, K. S. Woodward, {Title 
only) -_ 90 
Brachisthode on the helicoid, C. H. Kummell_ 90 
Motion of Plyperion, G. W. Hill--- 90 
Parallax of a Tauri, Asaph Hall_ 91 
Most probable value of latitude from entangled observations 
in use of Talcott’s method, A. S. Flint__ 91 
Mutual action of elements of electric currents, E. B. Elliott-. 92 
Association ratios, M. H. Doolittle_ 93 
Solution of a problem in Science, Henry Farquhar, {Title only). 96 
Solutions of the trisection problem, Marcus Baker, G. E. Curtis. 96, 98 
Integration of differential equations admitting periodic inte¬ 
grals, G. W. Hill_ 100 
Euler’s theorem (generally called Lambert’s), Asaph Hall_ 101 
New form of computing machine, E. B. Elliott__ 102 
The constant P in observations of terrestrial magnetism, Wm. 
Harkness_ 102 
Conditioned cooling of a homogeneous sphere, K. S. Woodward. 103 
The orbit of Hyperion, Ormond Stone_ 104 
Quotients of space-directed lines, E. B. Elliott_ 105 
Methods of finding n^^ power numbers whose sum is an 
power, Artemas Martin_ 107 
Committees on mathematical communications_ 111 
Note on the publications of the Society__ 113 
Index to Volumes I-X_ 117 
