TABLE OF CONTENTS. 



NUMBER I.— JANUARY. 



Page 



Mr. Colquhoun on the Life and Writings of Claude-Louis Berthollet. . . . l 



Mr. George on the Chloride of Titanium 18 



Mr. South's Corrections in Right Ascension of 37 Principal Stars 21 



Mr. Gray on the Structure of Pearls, and on the Chinese Mode of pro- 

 ducing them of a large Size and regular Form 2? 



On the Use of Animal Charcoal as a Flux 30 



Col. Beaufoy's Astronomical Observations 31 



On Paratonnerres 32 



Mr. Webster's Reply to Dr. Fitton . (With a Plate.) 33 



Mr. Thomson on the Discovery of Selenium in the Sulphuric Acid made 



from the Pyrites of Anglesey 52 



Mr. Phillips's Reply to Mr. Whipple 53 



Analytical Account of an Explanatory Dictionary of the Apparatus and 

 Instruments employed in the rarious Operations of Philosophical and 



Experimental Chemistry 56 



Proceedings of the Royal Society SQ 



Saline Efflorescence upon the Surface of Bricks ., 68 



Solubility of Oxide of Cobalt in Ammonia. — Cobaltic Acid 69 



Composition of Garnet 70 



Collection of Minerals- 72 



Supports for Minerals before the Blowpipe 73 



On the Geology of Snowdon 74 



Is the Level of the Baltic stationary? 74 



New Scientific Books 77 



New Patents 78 



Mr. Howard's Meteorological Journal 79 



NUMBER II.— FEBRUARY. 

 Mr. Colquhoun on the Life and Writings of Claude-Louis Berthollet. 



(continued) ^^ 



Sir A. Crichton on the Climate of the Antediluvian World, and its Inde- 

 pendence of Solar Influence ; and on the Formation of Granite 97 



Col. Beaufoy's Meteorological Table kept at Bushey Heath for 1824 109 



Rev.Mr.Emroett on the Mathematical Principles of Chemical Philosophy 109 



Major Macintosh on some Tumuli near the Falls of Niagara 122 



M. Berzelius on Fluoric Acid {continued) 124 



Col. Beaufoy's Astronomical Observations 131 



