CONTENTS. Vii 



Page 



On Right Angled Spherical Triangles. By Mr. J. Adams 422 



On the Mathematical Principles of Chemical Philosophy. By the Rev. 



J. B. Emmett ^continued) ,"". . 425 



On Diaspore. By G. B. Sowerby, FLS 433 



On Cadmium. By W. Herapath, Esq 433 



On the Method of analyzing the Ores of Nickel. By J. Berzelius {con- 

 cluded) 437 



On the Smelting of Tin Ores in Cornwall and Devonshire. By John 



Taylor, Esq 449 



Analysis of Two Varieties of Native Carbonate of Manganese. By M. 



Berthier , . 456 



Proceedings of the Royal Society, April 25, May 2, 9, 16, and 23 468 



_ Geological Society, Feb. 15, March 1, 15, and 



April 19 458 



Erratum in Dr. Thomson's Paper, ** On certain Saline Solutions, &c.". . 46^ 



Composition of Formic Acid 463 



Effects of Boracic Acid on the Acidulous Filiates of Potash, &c 463 



Analysis of Lepidolite 464 



Analysis of the Red Lepidolite from Moravia 465 



On the Tourmaline from Karingsbrakka, in Sweden 467 



|L.arapic Acid 469 



Preservation of Anatomical Specimens 469 



Native Nitrate of Soda 469 



Quantity of Copper raised in Cornwall 470 



New Scientific Books 47 1 



New Patents 47 1 



Mr. Howard's Meteorological Journal for April 473 



Index. , , 475 



