CONTENTS. v 



Page 



New Mineral Substance , 23(j 



On Compounds of Sulphur with Cyanogen, &c gofj 



New Scientific Books 237 



New Patents 233 



Mr. Howard's Meteorological Journal for July ogq 



NUMBER IV.— OCTOBER. 



On Floetz Formations. By Thomas Weaver, Esq. MRI A. &c. &c 241 



On a New Mineral. By P. Squires, Esq 0^4 



Tables of Temperature, and on the Causes of Calorific Capacity, Latent 



Heat, &c. By John Hera path, Esq. (continued) 2 5 g 



Historical Sketch of Electro-magnetism (continued). (With a Plate.). . . 274 



Description of a New Balance. By W. Herapath, Esq oqi 



On Mr. Smithson's Hypothesis of the Formation of Capillary Copper. By 



Charles Konig, Esq 201 



On Wollaston's Thermometer. By Dr. Apjohn oqo 



Thermometrical Observations. By Mr. John Blackwall 2 ( ,y 



Astronomical Observations for Sept. 1821. By Col. Beaufoy, FRS 300 



Analysis of Tabular Spar from Pargas. By Dr. Bonsdorff 300 



Reply to X. By Mr. Herapath 3 03 



Reply to Mr. Tredgoid. By Mr. Herapath 303 



On the perpetual Renewal of Leases. By Mr. James Adams 307 



On the Means of distinguishing Freshwater and Marine Shells, indepen- 

 dently of the Animal Inhabitant. By G. B. Sowerby, FLS 300 



Proceedings of trie Wernerian Society, March 10, 24, April 7, 14, 21 



and May 1<) 312 



Oil obtained by Distillation from the Hop ^15 



Process for extracting Cinchonin from Cinchona 3 l(j 



Analysis of the Sulphates of Cinchonin 3jg 



Purification of inferior Brazil Woods 317 



New Scientific Books 3jg 



New Patents 3,0 



Mr. Howard's Meteorological Journal for August 3] ( » 



NUMBER V.— NOVEMBER. 



On Electro-magnetism. By Prof. Oersted. (With a Plate.) 3oj_ 



On the Black Enamel obtained from Platina. By Mr. J. P. Charlton. . . . 337 

 On Floetz Formations. By Thomas Weaver, Esq. MRIA. MRDS. &c. 



(conlinticd) 30,, 



On the primary Form of the Bournonite, as deduced from its Cleavage 

 and Planes of Modification. By William Phillips, FLS. &c. (With a 

 P,a *0 3C0 



