IV CONTENTS OF VOL. XXXIII. — THIRD SERIES. 



NUMBER CCXX.— AUGUST. 



Tage 

 Mr. T. G. Tilley on CEnanthal, its Compounds, and the Pro- 

 ducts of its Decomposition 81 



Prof. E. Wartmann's Fifth Memoir on Induction. (With a Plate.) 89 

 Rev. B. Bronwin on a particular Transformation of the Differ- 

 ential Equations of Motion in the Theory of Planetary Per- 



turhation 95 



The Rev. J. Challis's Additional Analytical Considerations re- 

 specting the Velocity of Sound 98 



Mr. W. Beverley on the Magic Square of the Knight's March 101 

 Sir J. W. Lubbock on the Determination of the Numerical 

 Values of the Coefficients in any series consisting of Sines and 



Cosines of Multiples of a variable angle ^ 106 



M. Berzelius on the existence of Lactic Acid in Living Bodies 128 



Dr. Schunck on the Colouring Matters of Madder 133 



Notices respecting New Books : — Herschel's Astronomical Ob- 

 servations made at the Cape of Good Hope ; The Messrs. 



Chambers's Edition of Euclid 145 



Proceedings of the Royal Society 155 



Royal Astronomical Society 159 



Researches on the Combinations of Silicium, by I. Pierre .... 162 

 On the Constitution of the Phosphates of the Organic Alkalies, 



by Dr. Thomas Anderson 1 63 



On the Preparation of Creatine, &c, by Dr. Gregory 164 



Researches on the Constitution of the Atmosphere 165 



Researches on essential Oils, by M. C. Gerhardt 166 



Meteorological Observations for June 1848 167 



Table 168 



NUMBER CCXXL— SEPTEMBER. 



Lieut. Spratt on the Influence of Temperature upon the Distri- 

 bution of the Fauna of the iEgean Sea 169 



Dr. T. Anderson on the Products of the Destructive Distillation 

 of Animal Substances. Part I ] 74 



Mr. J. Glaisher's Remarks on the Weather during the Quarter 

 ending June 30, 1848 186 



Mr. A. Cayley on the Application of Quaternions to the Theory 

 of Rotation 196 



Mr. T. S. Davies on Geometry and Geometers. No. II 201 



Mr. J. Goodman on a new and practical Voltaic Battery of the 

 highest powers, in which Potassium forms the positive element 207 



Mr. G. Boole's Remarks on a Paper by the Rev. Brice Bronwin, 

 On the Solution of a particular Differential Equation 211 



