iv : CONTENTS. 
SCIENTIFIC INTELLIGENCE. 
Chemistry and Physics—On the comparative Cost of making various Voltaic Ar- 
rangements, by Mr. W.S. Warp: Researches on Wax, by Bensamin Cox- 
uins Bropre, 111.—On the Phosphoric Ethers, by F. Vocexi1, 113.—On the 
Estimation of Niroge acid, by H. Scawarz+: New mode of preparing Nitrogen, 
by B. CorenwinpeR: New Process for detecting Iodine and Bromine, by 
phere, by M. Fresenius: On the varieties of Chloroform, by MM. Souserran 
and Miauué, 115.—On the Composition of Shea Butter and » agen Vegetable 
Tallow, by Dr. R. T. Taomson, and Mr. E. T. Woo On occurrence of 
Butyric Acid in the Fruit of the Soap tree, b Dr. v ESANEZ, ae 
—On the preparation of Hyposulphite of — , by M. Flom On the amo 
of Lime in Lime Water, by M. Wirrste : On the preparation of Bcsints” 
acid from Malate of lime, by Lirsie, 117. — Chemical oe of a Calculus 
from the bladder of a whale, by Wrnt1am Keixier, M.D.: On the presence of 
Fluorine in the Waters of the Firth of Forth, the Firth of Clyde, and the Ger- 
man Ocean, by G. Witson, M.D., 118.—On the Artificial Production of cer- 
_ tain Crystallized Minerals, particularly Oxyd of Tin, Oxyd of Titanium, and 
Quartz,, by M. A. Davsrés, 120.—On the Origin of the Titaniferous veins of 
the Alps, 122. 
Mineralogy and Geology.—Analysis of Schuylkill Water, by M. H. Bov&: On 
Acid and Alkaline Springs, by Prof. W. B. Rogers, 123.—On Reptilian foot- 
marks in the gorge of the Sharp Mountain near Pottsville, Pa., by Isaac Lea, 
24.—Gold on the farm of Samuel Elliot, Montgomery County) Md. : Gold of © 
California, 126. 
Botany and Zoology.—Description of a Nut found in Eocene marl, by Epmunp 
Rorrix, 127.—Synopsis Generum Crustaceorum Ordinis Schizopoda J. D. 
sheen clepeaniins La —Eyes of Sapphirina, Coryceus, etc., by J.D, Dana: Con- 
» Nos. 1-4; and Monograph of Sroasroma, a new genus 
of new ‘pyavontated land shells, by Pet Cc. B. Apams, 133.—Eryx maculatus, a 
- new species from Madras, by Enwarp Hatuowexn, M.D.: Descriptions of 
four new species of North hutch Hahieeaatlice, and one new species of 
Scink, by Prof. Spencer F’. Barrp, 137,—On Infusorial Deposits on the River 
Chutes in Oregon, by . Secseatnn On the Fossil American Tapir, by 
Joserx Lerpy, M_D., 
Astronomy.—On Nebule observed with Rosse’s Telescope, 140.—A. Model of the 
Moon’s ao 143. 
bg: Ce Intelligence. Bhegapng in North Carolina, 143.—Further Contri- 
butions to Anemometry, by Prof. Partuips, 145.—Discovery of another huge 
Heptilo. by Dr. Mantell: pensar Birds of New Zealand: Cabinet of Geology 
and Mineralogy for sale: Correction, 147. 
Bibliography.—Endlicher, Generum Plantarum Supplementum Quartum; Pars II, 
148.—Contributions to the History of British Fossil Mammals (first series), by 
IcHARD Owen, F.R.S., 149. we Encyclopedia, by C. Hecx, 
translated and edited by Prof. 8S, F. Ba : The ‘A sivcincdilical Journal, edited 
by Bensamin Apruorr Govxp, Jr.: "Footed Complete Geological Chart, 
151. — Almanac and Repository of Useful ——— for the year 
1850, 1 
List of am 152. 2 
