CONTENTS, vii 
XXXIV. Description of an Isopod Crustacean from the Antarctic 
Seas, with Observations on the New South Shetlands; PY 
James Eteuts.—With two plates, - 391 
XXXV. Description of a large Bowlder in the Drift of Kabiseit 
Massachusetts, with parallel strie upon four sides; by Pro- 
fessor Epwarp Hircncocx, - . . : - 397 
ae SCIENTIFIC INTELLIGENCE, 
Chemistry and Physics.—On the wave lengths of the most refrangible rays of light in the 
Interference Spectrum, 400.——On the connection between the theorem of the equiva- 
pra of formic fi cat the determination of chlorine by titri- 
among Solutions, and the means of representing them, by Dr. GuapsTonr, 412.—On 
: several new methods of detecting Strychnia and Brucia, by T. Horsxey, 413 
Geology.—On the Spongeous Origin of the Siliceous Bodies of the Chalk Formation, by 
J.S. Bowersank: On some Paleozoic Star fishes, compared with Living Forms, by 
J. W. aeerens age —On - nichts ee - we Earth, by Prof. Hennessy, 416. 
the 
I ies, by J. W. Sate 
—On 
417.—On the Bone Beds of the Upper: Ludlow Rock, and the base of the Old Red Sand- 
stone URCHISON, 418. sil Mammal (Stereognathus ooliticus) 
from the Stonesfield Slate, by Prof. Owrn, ti —On the Dichodon cuspidatus, 
Upper Eocene of the Isle of Wight and Hordwell, Hants, by P Nn, 420.—On a 
range of Volcanic Islets to the Southeast of Japan, A. G. Finpuay, 421.—On the 
n 
_ New Red Sandstone Formation of Pennsylvania, vd Isaac Lea, 422.—Descriptions of 
: New as of Acephala and Gasteropoda, from the Tertiary SobeumtSocte of Nebraska 
tory, with some general remarks on the cacy of the Pagel about the sources 
*y he Missouri River, by F. B. Meek and F. V. ponange M.D., 
and —AlIph. DeCandolle hi se, ou Exposition 
des Faites ‘cfg et des Lois concernant fe. Distribution Gsiieaphique des ne 
de l’'Epoque Actuelle, 429.—Origin of the Embryo in Plants, 432—Bentham, Note 
Loganiacee, 433.—The Flowers of the Pea-Nut, 435—Martius, Flora Diatienais: : L 
R. Tulasne, Monographia Monimiacearum, 436.—Chloris oe Essai d’une Flore de 
la Region Alpine des Cordilléres de Padecigle du Sud, par H. A. Weppe.t, M.D. :; 
Manual of the Botany of the Northern United States, by Prof. Asa Gray, 437.--Report 
on the present state of our knowledge of the Mollusca of California, by Rev. P. Car- 
PENTER, 438.—On the Vital Powers of the Spongiade, by Mr. Bowersanx, 439.— 
Gar-pikes, 440. 
“ara —New Planets, Harmonia, 440,—Daphne : Isis, 441, 
Bae Se ae 
Miscellaneous Intelligence —American Association for the Advancement of Science, 441. 
= Meteor of July 8th, by W. Sprtuman, 448.—-Sulphuric Acid Barometer: Can- 
Obi 
: British 
Selina, 449,--Geology of the Pacific and other regions visited by the U. S. Explor- 
_ing Expedition under C. Wilkes, U. S. N., in the years 1838-1842, by James D. Dana: 
