CONTENTS. Vii 
Page. 
XXXVI. On the Chemical Equivalents and Notation of Laurent 
and Gerhardt; by CuarLes GERHARDT, 364 
XXXVII. The Natural Relations between shabenili ae the le. 
ments in which they live; by L. Acassiz, - 369 
XXXVIII. On a new Analogy in the Periods of Rotation of ihe 
Primary Planets, discovered by Daniel Kirkwood, - : 5 
XXXIX. On the so-called Biogen Liquid; by Cuartes Grrarp, 3899 
XL. Note on Heteronomic Isomorphism; by James D. Dana, 407 
XLI. On some atte ‘aad Mas ge by M. papel 
by J. D. Dan 408 
XLII. On the imerpretation of Masiotte’s ae : pees Lieut. 
E. B. Hunt, - 412 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics.—On the Deportment of Crystalline Bodies between the 
of a Magnet, by Joun Tynpaty and Hermann Kwoptavcn, 414.—Ar- 
senic in the deposit from Mineral Waters, by M. J. L. Lassaicne: On the re- 
duction of Chlorid of Silver, by M. Wirtsrrin, 418.—On the Chemical Com- 
position of the Fluid in the Ascidia of Nepenthes, by Dr. A. VortcKker: Chlo- 
rine and Oxygen from Chlorate of Potash, by Dr. Vocer: Action of Potash 
Gas through solid bodies, by M. Lovyer: On the presence of Silver, Lead and 
Copper in Sea-water, and in Plants and Animals, by MM. Matagurt1, Du- 
ROCHER and SarsEav, 421.—Ruthenium, 422. 
Mineralogy and Geology.—Description of the Vermiculite of Milbury, ps, by 
Dr . Jackson, with an analysis by Mr. Ricnarp Crossteyv, 422.—On the 
Bide pips characters of the “rng s from the roi identified with meanest by 
J.E. Tes rrr wba . Hayes, 423.—On the Red Zine Ore of New 
Jersey, by A. A. Havre Oe the existing Mineral oa of Lewis, Jeffer- 
son, and St. Sek ecules: New York, by Dr. F. B. Hoven, 424.—Iso- 
wee of Miargyrite and Augite: Analysis of the Schorlomite of Shepard, 
C. RammetsBere, 429.—Large crystals of Sphene : On the Ozarkite of 
“Dhl by J. D. Dana, 430.—The Lagoons of Tuscany, 431.—On the Great 
Diamond in the possession of the Nizam, by Henry Pippineton, 434.—An 
account of the Strata and Organic Remains exposed in the Cuttings of the Rail- 
way from the Great Western line near Corsham, through Trowbridge to West- 
bury in Wiltshire, by Rearnanp Nevinue Manteu, Esq., 436.—Notice of 
the Remains of the Dinornis and other Birds, and of Fossil and Rock specimens 
recently collected by Walter Mantell, Esq., from the Middle Island of New 
Zealand, by G. A. Manretu, Esq., LL.D., F.R.S., &c., 437 
Zoology.—Supplementary Observations on the Structure of the Belemnite and 
Belemnoteuthis, by Gingon Anarrnon Masre.u, Esq., LL.D., F.R.S., &c., 
438.—On the Pelorosaurus; an undescribed gigantic terrestrial reptile, whose 
remains are associated with those of the Iguanodon and other peng in the 
Strata of Tilgate Forest, by Ginron ALGrRNon ManTe.t, Esq., LL.D., F.R.S., 
