— ccxx — 



Cliemical Bodicp. — Some Remarks on the Classification of 

 Tiibolites, as induenced by Slratigraphical Relalions : wilh 

 Outliiio of a New Grouping of Ihese Forms. — N. F. Dupuis. 

 Crnces niathemalicao. — Computation of Occullatioii and Eclip- 

 ses for a given locality by Graphic Construetion. — J. G. Mac 

 Grecjor. Ou the Variation of tlie Density with the Concentra- 

 tion of Wcak Aciuoous Solutions of Cortain Saltz. — G. C. 

 Jloffniann. On the Hygroscopicity of certain Canadian fo«;sil 

 Fiiels. — Annotated List of Minerals Occurring in Canada. — 

 L. W. Bailey. On the Progress of Geological Invostigation in 

 New Brunswick. — On some Relations between tlie Geology 

 of Eastern Maine and New Brunswick. — D. P. Penhaìlow. 

 Notes on Devonian Pianta. — ./. W. Dawson. On New Species 

 of Fossil Sponges fiom the Sihiro-Catubrian at Little Metis 

 on the Lower St. Laurcncc. — On Fossil Planls coUected by 

 M.r R. A. Me Connel, on Mackoiizie Rivcr, and by .Mr. T. C. 

 Wcston, on Bow River. — ,/. F. Whiteaves. Dcscriptions of 

 cight New Species of Fossils from the Cambro-Silurian Rocks 

 of Manitoba. — A. H. Mackay. Fresli-water Sponges of Ca- 

 nada and Newfoundland. — A. P. Coìcman. Notes on the Geo- 

 graphy and Geology of the Big Bcnd of the Columbia. — W. 

 Saunders. The Yeld of Spring Wheat, Barley and Oats, grown 

 as Single Plants. — /. W. Spencer. The Iroquois Beaci» : a 

 Chaptor in the Geological History of Lake Onlaiio. — G. F 

 Matthew. On Cambrian Organisms in Acadia. 



^Vì'oceedinffR of the Accademy of Nrdìiral sciences of 

 Philadeìphia. - Par I, Janiiarj-March 1890. 



*Proceedings of the American Academy of arts and 

 sciences. - New Series, Voi. XVI, (Whole Scries, Voi. 

 XXIV.) - Boston, niay ISSS-nia^- 1889. 



*Proceediìu/s of tlie Arno-ican PhiIo.sophic(d Society. - 

 Voi. XXVIII, 131-133. - Philadeìphia, 1889-00. 



