CONTENTS. riT 



New Scientific Book« ,... 398 



New Patents 3g8 



Mr. Howard's Meteorological Journal 3{jt> 



NUMBER VI.—DECEMBER. 



On Gas Illumination. By T. Dewey, Esq 401 



History of the Use of Brass and Iron. By the Rev. J. Hodgson 407 



Method of fixing Particles on the Sappare. By James Smithson, Esq, 



FRS .' 412 



Qn the Ratio of Expansion of Gases. By Mr. M. Biggs 415 



On Mr. Macleay's Doctrine of Affinity and Analogy. By the Rev. W. 



Kirby,MA.FRS. and LS 41? 



Some Account of a scarce and curious Alchemical Work, by M. Maier. 



By the Rev. J. J. Conybeare, MGS. (concluded) . 426 



Astronomical Observations. By Col. Beaufoy, FRS. 435 



Ou Thermomagnetic Rotation. By Prof. Camming, MA. 436 



On the Crystalline Forms of Artificial Salts. By H. J. Brooke, Esq. FRS. 



(continued) 437 



Analysis fif Sulphate of Nickel. By H. Phillips^ FRS. L. and E. &c. . . . 43^5 



On the Temperature of Mines. 441 



Occurrence of Cleavelandite ia certain British Rocks. By W. Phillips, 



FLS. &c * .4m 



On some Thermomagnetic Experiments. By Dr. T. S. Traill 44a? 



Analytical Account of Mr. Daniell's Meteorological Essays , ; 452? 



of Mr. Gray's Elements of Pharaiacy 45g"^- 



On the Ignition of Platina, &c. by Hydrogen Gas . ^ 4(># 



On the Ignition of Platina by Hydrogen Gas. By Mr. Garden 46# 



On the Fusion of Charcoal, Graphite, Anthracite, and the Diamond (con- 

 cluded) ....»...,.,. 468 



New Scientific Books 472^^ 



New Patents , 4f^ 



Mr. Howard's Meteorological Journal 473^ 



Index ,... ... 475;, 



PLATES IN VOL. VI. (New Series.) 



Plates. Page 



XXI. — Granite Veins , 91 



XXII. — Volcanic Island of Milo 274 



XXIII . — Description of the Galvanoscope « 28^' 



