vi CONTENTS. 
kept at Marietta, Ohio; by S. P. Hiprere, M.D., - - 234 
XXV. On the Composition of Eggs in the animal s series; by A. 
VALENCIENNES and Frémy.—Part II. : - - 238 
XXIV. Chemical Examinations; by Ezequien eiehwekens - 248 
XXVII. Review of the Fifth volume of the one of New 
k, y E. Emmons, - 247 
XXVIII. Contra ; by Prof. C. — - - 252 
XXIX. On a remarkable change which has taken ise in the 
PS, 
composition and characters of the Water, supplied to the 
City of Boston from Lake Cochituate ; = Aveustus A. 
Haves, M.D., = - - “OF 
XXX. On Gum Mezquite ; ” Odeanls hie, M. D., - 263: 
SCIENTIFIC INTELLIGENCE, 
Chemistry and Physics.—On a elastic forces of vapors in vacuo and in gases at wagers 
tempers, bu on me ension of mixed vapors, 264—On butylic Alcohol, 268.—On 
the f Copper: On the action of iodid of amyl upon an ae 
of sodium and tin, 269,—New 1 Onenste radicals containing arsenic: Action of iodid of 
phosphorus upon glycerine, 270. 
Geology, B Zoology.—Darstellung der Flora des Hainichen Ebersdorfer und des 
Fidher Cshietbouie y H. B. Gernitz, 271 —A eget of the Cirripedia with 
fignres of all the species; "bs Balad. or sessi irripedes, the Verrucide, etc., by 
Cuares Darwin, F.RS., F.G.S., 272. 
RIT. 
Astronomy. —Elements of Euphrosyne (31), 272. 
a Inte Tiscisilaise tas tmospheric Elee trical Phenomenon, ey ha Warez, 
272.—On the Clearness of the echt in Oroomiah, by Rev. D DDA| 
from a ‘est addressed to Sir John F. W. Herschel, 273 —Abstract of Hiiecclagiesl 
8.—Dem i 
tinction ore to limit the Vegetable and Animal Sinedan ms, by Epwin LanKEs- 
ter, M.D., F.R.S., 232.—Letter on the Smithsonian iene by Prof. Acassiz, ad- 
dressed to this seat Charles W. Upham, 284.—On th called “ Fountain of Blood” 
of Honduras, by Dr. E. D. Norru, 287.—On a large Pinaud from the district of nie 
os Hail at Cuba; Gold near Reading, Pa.: On the Mountain Systems of America, 
.—Professor Edward Forbes, 290.—Faraday’s tures, 294.—Professor 
Brn’ Ten Lectures on Arts connected with Organic Chemistry : Outlines of Chem- 
lysis, prepared for the Chemical Laboratory at Giessen, by Prof. Hernrica 
Walt bie! auative Races of the Russian Empire, by R. G. ee M.D., F.R.S., 
