iv CONTENTS. 



Pap:e 



Analysis of Two Finnish Minerals. By Dr. Von BonsdorfT 102 



Demonstration of a Proposition. By Mr. James Adams 105 



Historical Sketch of Electro-magnetism (^concluded) 107 



Reply to B.M. By Mr. J. Murray 12i 



On Cadmium. By Dr. Clarke 123 



On a peculiar Imperfection of Vision. By Dr. Whitlock Nicholl 128 



On Congreve Rockets. By Lieut. Alderson 138 



Statements of Prof. Playfair respecting the University of Cambridge 138 



Analytical Account of Philosophical Transactions for 1821. Part II. 



(^continued) 143 



Proceedings of the Royal Society, Jan. 10, 1 7, and 24.,.. /.;V'. ;>...... 'I^ 



Preparation of Quinine , . . . . . .-.V.i;.' I i.V .'' 151 



Improvement in Stringed Instruments ....♦ 151 



Comparative Analysis of the Food and Excrement of the Nightingale. ... 152 



Analysis of Black and Green Tea. ..ii .'.'.'.'. i .;'!.. . . . ."". ...<.. 152 



Explosion of Chlorine and Hydrogen .*....'. 153 



Sulphato-tricarbonate of Lead , ': .\'.' . . ; i'54 



Calc-sinter found to be Calcareous Spar I54 



New Mineral from Aachen 1 54 



On the Spurs of the Ornithorynchus ..•.•.•.•.•,•;.'. 155 



Methods of kindling Fire on the Sandwich Islands. iViVi/J. J65 



Lighting Public Clocks with Gas. ......... ........... ;;i^JiJ^^lVii.CUi^4s6 



New Scientific Books 156 



New Patents. ... % 157 



Mr. Howard's Meteorological Journal for December 1 59 



NUMBER III.— MARCH. 

 On the Weight of an Atom of Alumina. By Thomas Thomson, MD. 



FRS 161 



On the Deposition of Crystals by Agitation. By Thomas Thomson, MD. 



FRS 169 



Meteorological Results kept at Cornwall for 1821 . By E. C. Giddy, Esq. 175 



On Native Phosphate of Copper. By Francis Lunn, BA. FRS 179 



On the Geology of the Cliffs at Brighton .*»...* 183 



On the Formation of Ice in the Beds of Rivers. By Thomas M'Keever, 



MD 187 



Meteorological Journal kept at Helston, Cornwall, for 1821. By Mr. 



M. P. Moyle 1 90 



On Cadmium. By Dr. Clarke. . . . 1 7.T; i .*:. 1 95 



On a Deposit found in the Waters at Lucca. By Sir H. Davy, Bart. PRS. I99 



On Carburet of Nickel. By Mr. N. Mill 201 



Chemical Examination of Cubebs. By M. Vauquelin 202 



On the Metho<i of analyzing the Ores of Nickel. By Prof. Berzelius .... 206' 



Aslronomical Observations. By Col . Beaufoy, FRS 2 1 6 



Meteorological Register for 1821, kept at Kinfauns Castle 217 



