CONTENTS OF VOLUME XXVII. 
NUMBER LXXIX. 
Pag 
Art. I. Some ee of Animal seroneleay 5 by D. F. Wein- 
LAND, - - - - 1 
II. On some ssucosl wiciles of Gentntion by JEFFRIES a ee M.D. 5 
III. Some Facts respecting the Nitrates; by Joun M. Onpway, 14 
IV. Further Observations on the Allotropic Modifications of Oxy- , 
gen, and on the Compound Nature of Sica Bees 3 
Z by Professor ScuonBEIN, 19 
/ V. Occurrence of Cobalt and Nickel in unin county ‘North 
Carolina ; by Prof. Henry Worrz, 
VI. On the so-called Triassic Rocks of Ses ae ioteaks ; ; 
by F. B. Meex and F. V. Hayvpen, - - - 
VIL. On Lazulite, Pyrophyllite and eee in Georgi PY 
Cuartes UrHam SHEPARD, - - 
VIII. Address by Lord Brougham on the Knuguration ofa Rane 
to Sir Isaac Newton, - 40 
IX. Description of a new Mineral Specie from Chili; ; ee pa 
ERICK FIExD, ° — 
X. Geographical Madea Ng 2 53. 
XI. Biographical Notice of Deane Conybeare a Alcide Dor. 
bigny ; by Major-General Portiocx, . 63 
XIL. Caricography ; by Prof. C. Dewey, 78 
XIII. On the Variable om teatne Power of Coal Gail by Prof 
Wm. E, A. Arkin, : © es ot 
XIV. On the Dynamical Condition of the Head or a Comet ; " ee 
Professor W. A. Norton, 86 
XV. Review of Hall and Whitney o Report « on pa ¢ Geology of 
Iowa, + . 2 - 103 
