CONTENTS. ¥ 
teoric iron from Tula, Russia, 144—The meteoric iron from Nebraska, 146.—-Abstract 
of Meteorological Observations, waiee during the year ore Pier the averages of eight 
years, at Sacramento, Cal., by Tuomas M. Loaan, M.D., 
— gr Intelligence. Woon ger coat ‘arts at Mendoza ;: 
Prussian Expedition to Japan and China, 148.—Correctio 
Book — —Ancient Works in Western N ew York a Elementary Treatise on 
Human Anatomy, by Josern Lerpy, 149. = Handi der metallurgischen Hiitten- 
Geode, von + a Keay, 150, 
Obituary.—Dr. Charles Robb: Hermann Dauber, 150. 
Books received, 150.—Brochures—Physical and Astronomical: Chemical: Anatomical 
and Zoological, 152. 
NUMBER XCY. 
Page. 
Art. XVI. Waterglass; by J. M. Onpway, - - - 
XVII. Sketch of the Distribution of Hspa-tocen' in Nebraska 
Territory ; by James T. AntEN.—(In a letter to Prof.Gray), 165 
XVIIL. Remarks on the Age of the Goniatite Limestone at Rock- 
ford, Indiana, and its relations to the ‘* Black Slate” of the 
Western States, and to some of the succeeding rocks above 
the latter; by F. B. Meex and A. H. Wortnen,~ - - 7 
XIX. Chemical Contributions; by M. Carey Lea, wi VIF, B10 
XX. Contributions to the History of Picric Acid; by M.C.Lea, 180 
XXI. On the Relation between our Rereepiine, of Distance and 
Color ; by Prof. O. N. Roop, : - - 184 
XXII. On the Practical ge ication of Photography to the Micro- 
scope ;. by Prof. O. N. Roop, - 
XXIII. On some questions concerning the Coal ae of 
North America ; by Leo LesquvereEvux, (continued), 193 
XXIV. Observations upon the Freezing of Water at the Paste 
Chemical Works, Newark, N. J.; by Artemas Bicztow, 205 
XXV. Note on the probable Age of the White Limestone, at 
Sussex and Franklin Zine ast New em is Prof. 
Georce H. Cooke, : " 208 
XXVI. Chemical Contributions ; ‘ M. c. LEA : . 210 
XXVII. On the Production of new Coloring Mailers by bee 
position of N dake ng and ee ers ; by 
M.C. Lea, - - it 
XXVIII. The Primordial Zone of ae, oa description of 
New Fossils; by B. F. SHumarD, - - «238 
XXIX. On the constitution of the Planetary eystent ; and on the 
theory and tables of Mars, (in a letter addressed to Marshal 
