CONTENTS. 7 
NUMBER LXXXVI. 
Page 
Art. XV. Review of Darwin’s Theory on the rie of Species 
by means of Natural Selection, - 
XVI. Forces; by THEopore Lyman, - erie 485 
XVII. On the causes of deviation in Blongated Press : ty, 
Maj. J. G. Barnarp, U.S. A., 191 
XVIII. Gulf Stream Explorations——Third rig ‘Distibation 
of Temperature in the Water of the Florida Channel and 
Straits ; = A. D. Beige Sup’t U.S. Coast ee — With 
Diagram - . 39 
XIX. On the Chemical eee of Pectolite: by I. D.Wuitney, 205 
XX. Notes on the Ancient Vegetation of North America; od 
Dr. J.-S. Newserry. Ina letter to Prof. Dana 208 
XXI. Abstract of a Meteorological Journal, —_ at Matic, 
Ohio; by 8. P. HinpretH, aD. 218 
XXII. race Notices; by Dantet C. peace No. XI, 221 
Biographical Sketch of Cart Ritter, 221.—Lentz’s Report 
on his Explorations in Persia and Afghanistan, 232.—Scua- 
GInTWwEIT’s Ethnographical Collections, 285.—A. ScitLaGint- 
weir’s Death in Turkistan, 236.—Letter from Dr. Livines- 
TONE, 337.—Krarr’s Residence and Travel’s in Eastern Af- 
rica, 240.—Sprexe’s Explorations in Eastern Africa, 242.— 
_H.Scutacintwer on the Salt Lakes of the Himalayas, 245. 
a of the Roy. Geographical Soc. of London, 246. 
- XXIIL On the Species of Calceola found in Tennessee :—Calceola 
i by Prof. J. M. Sarrorp - 248 
XXIV. The Great Auroral Exhibition of Ages 98th to Septem- 
ber 4th, 1859.—3d Article, - 249 
XXV. Correspondence of Mr. Jerome Ne he Sephy— 
Cagniard-Latour, 266.—The Aurora Borealis and its theory, 
268.— Haman Remains in the Drift: Curare in the treat- 
ment of Tetanus, 269.—The new alloys of Platinum: 
Rifled Cannon, 270.—Acclimation : Photo-Chemical Re- 
searches—Persistent Activity of Light: Maritime Canals, 274 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics —On two new series of Organie Acids, Herwrz, 272.—On t 
ical constitution of cae acid. a Taurin, Kose: Researches on the reer 
weight of Graphite, BropiE, 274,—On the Cause of Color and the Theory of Light, by 
Mr. Joan Surru, M.A‘, 276. 
