Vi !<()( lll.MKi: .\( ADKMY OF SCIENCE. 



PAGE. 



Hotany 44-4S, 107. 113, 119, i so. 154-167. '^S, 170 171, 176 180, 



237 243. 254 255. 292, 293-300 



Electricity 18, 290 



Engineering 233-235, 254. 293 



Entomology 267 



Ethnology. 107. 121, 202 



Geodesy 213 214 



Geography 132, 168, 169. 201 



Geology and Paleontology. .. .2, 19, 48. 49 104, 104 107, 120, 132. 167, 170, 



181 200, 210, 215-223, 231, 263-266, 285 



Hygiene and Medicine 270-278, 292 



Mathematics 113. 202-203, 256-260 



Meteorology 40, 109 112. 134 148, 15' '53- i7'-i73. 212, 231, 245-254, 



266, 290-291 



Mineralogy 122-132 



Physics 292 



Physiography 112, 278-285 



Zoologv 3, 19, 41, 113 1 18, 206 209, 286-289, 289 



PAPERS READ BEFORE THE ACADEMY. 



Alijkrt L. Akev, 

 Preliminary Notice of the Discovery of Strata of the Guelph Formation 



in Rochester, N. Y 104 



Arthur Latham Baker, 



Non-F^uclidean Geometry (title) 1 13 



Note on the Classification of Surds and Irrationals 202 



Circular Inversion and its bearing on the Peaucellier Cell and the Straight 



Line 256 



Frank C. Baker, 



Caves of \'ucatan (abstract) 2 



Shells from the Mauritius 19 



Digestive System of the MoUusca (title) 41 



Flokenciv Beckwith, 



Variations of Ray-Flowers in Riidbeckia liirta 170 



Hybridity of Willows 255 



A Biographical Sketch of Dr. Samuel Beach Bradley 261 



H. Carrington Bolton, 



Four Weeks in the Wilderness of Sinai (title) 132 



Henry F. Burton, 



Building Materials and Methods of Construction employed in Ancient 



Rome (title) 169 



The Arciiilectural Splendor of Ancient Rome (abstract) 204 



