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CONTENTS. v 
of Explorations and Surveys for a Railrood from the Mississippi River to the dane va 
Mixer: Topographical and Geological Report of Chester Co., Pennsylvania, by 
W. D. Hartman, M.D.: Kobell’s Determinative Mineralogy, translated by G. J. 
Brusn and S. W. Jounson: Volcano of Hawaii: Organic Morphology, 151—New 
Publications, 152. 
NUMBER LXXIV. 
Page. 
Arr. XIV. An Address in Commemoration of Professor J. W. 
Baitey, late President of the American Association for the 
Advancement of Science; by Dr. A. A. Goutp, - - 
XV. On some remains of Batrachian Reptiles discovered in the 
Coal Formation of Ohio, by Dr. J. 8S. Newberry and Mr. 
C. M. ones ; by Jerrries Wyman, M.D., of Cam- 
bridge, Mass - - - - - 158 
= Fichtelite, a <— Aiibo: ieee found in ite ** Fich- 
- telgebirge” of North Bavaria; by T. Eowarps Crarx, Ph.D., 164 
XVII. On the Characters, Principles of Division, and Primary 
Groups of ay Class Mammalia; by Professor py scien F.R. fe 
F.L.S.. - 177 
XVIIL. On Ghaicsaie by Phere 4: Been” - - 198 
XIX. Agassiz’s Contributions to the Natural niaiory of re Uni- 
ted States; J. D. Dana, : 202 
XX. Contributions to the ae ake of Ophiaites Part 13 by 
T. Sterry Hunt, - - - - - 217 
XXI. The Chalchihuitl of the ancient Maxie: its locality and 
association, and its identity with Turquois; by W. P. Buaxe, 227 
XXII. On a method of Preparing and Mounting Hard Tissues 
for the Microscope ;_ by CuristopHer Jounston, M.D., 232 
XXIII. Blodget’s Climatology of the United States and of the 
Temperate Latitudes of the North American Continent, - 2385 
XXIV. Preliminary notice of a new base containing Osmium 
and the elements of = 7 Wotcorr Gissps and 
F. A. Gentu, . - - 248 
XXV. Review of the Operation sid Resi of the United States 
Coast Survey, 2 
XXVI. Description of New Chiveantiecins Fossils from os 
Appalachian, Illinois and oe Coal- = ei RP, 
able - ~ . é 
