CONTENTS OF VOLUME XXXVI. 
NUMEER CVI. 
Arr I. On Cephalization, and On Megasthenes and Microsthenes, 
in Classification (being in continuation of an article on the 
Higher Subdivisions in the Classification of ance bel 
James D. Dana, - - 
fi. Observations upon some of the yas tee with ae 
to the genera Cryptonella, a — and allied 
q forms; by James Hatt, - 
If. Hydraulics of the Report on the Mississippi River of ‘Eis 
’ phreys and Abbot; by Prof. F. A. P. Bannaro, LL.D., - 16 
4 IV. Observations on some of the Double Stars; by Marta Mitcnety, 38 
_ V. On the Flora of the Devonian Period in Northeastern Amer- 
ica; by J. W. Dawson, LL.D., F.R.S., etc.,  - 41 
VI. Action of Bromine and of Bromhydric Acid on the Foor 
of Ethyl; by J. M. Crarrs, - - - 42 
VIl. New Facts and Conclusions respecting the Fossil rican 
of the Connecticut Valley; by Epwarp Hrrcucock, - 46 
VIL On Hydrastine; by F. Manta, Ph.D, - - + + 57 
IX. Description of a Photometer; by Prof. O. N. Roon, - - 60 
X. On Aerolitics, and the fall of Stones at wore laa a 
1861; by N.S. Masketyne, - 64 
XI. The Sun and Stars photometrically compare ad ee 
CrarK - 76 
Xif. On Giese a: ae its i nciad ; by Prof. Cassie ‘ Joy, 83 
XIlf. Remarks on the Luminosity of Meteors as affected = La- 
tent Heat; by Bensamiy V. Marsu, - «92 
XIV. Proceedings of Learned Societies :-—-1. On Radiation ; 
7 through the Earth’s Atmosphere; by Joan ‘T'ynpaut, 99.— 
2. On the Photegraphic Transparency of various Bodies, 
and on the Photographic Effects of Metallic and other Spec- 
tra obtained by means of the Electric Spark; by Prof. 
a 
