iv CONTENTS OF VOL. XVIII. — FOURTH SERIES. 



NUMBER CXVIII.— AUGUST. 



Page 

 Mr. H. C. Sorby on the Expansion of Water and Saline So- 

 lutions at High Temperatures 81 



Prof. Draper on a New Photometric Process for the Determina- 

 tion of the Diurnal Amount of Light by the Precipitation of 



Gold 91 



Mr. G. Gore on the Rotation of Hollow Spheres of Metal by 



Heat 9-1 



Mr. J. Drummond on some points of analogy between the 

 Molecular Structure of Ice and Glass; with special reference 

 to Professor Erman's observations on the Structural Divisions 



of Ice on Lake Baikal 102 



Mr. H. C. Sorby on the Freezing-point of Water in Capillary 



TubesJ 105 



Prof. Davy on the presence of Arsenic in some Artificial Ma- 

 nures, and its absorption by Plants grown with such Manures. 108 

 Prof. Langberg on the influence of Capillary Attraction upon 

 the Hydrometrical Measurement of the Specific Gravity of 



Liquids 113 



Mr. A. Cayley on an Analytical Theorem relating to the Dis- 

 tribution of Electricity upon Spherical Surfaces. — Part I. . . 119 

 Mr. C. P. Smyth on TeneriflFe Fossils, and Sir Charles Lyell's 



Notice in the Philosophical Magazine for July 1859 127 



Dr. Atkinson's Chemical Notices from Foreign Journals .... 128 

 Proceedings of the Royal Society : — 



Dr. Matthiessen on the Action of Nitric Acid and of Bin- 

 oxide of Manganese and Sulphuric Acid on the Organic 



Bases 136 



Dr. Smith on the Action of Food upon the Respiration . . 139 

 Mr. J. J. Bennett on the Discovery of the Composition of 



Water 141 



Dr. Dobell on the Influence of Light on the Growth and 



Nutrition of Animals 143 



Dr. Alison on the Intensification of Sound through Solid 



Bodies 146 



Dr. Hofmann on Diphosphonium-compounds 148 



Mr. J. P. Muirhead on the Discovery of the Composition 



of Water 151 



Proceedings of the Geological Society : — 



Mr. J. Lamont's Notes on Spitzbergen 153 



Mr. T. S. Hunt on the Formation of Gypsums and Dolomites. 153 

 The Rev. S. Hislop on the Tertiary Deposits, associated 



with Trap-rocks, in the East Indies 153 



On the Expansion of Crystalline Bodies by Heat, by H. Hahn. . 155 

 Description of various Processes made use of for finding out the 



Configuration of Optical Surfaces, by M. Leon Foucault . . 157 

 On the Organic Substance in the Meteoric Stone of Kaba, by 

 Professor Wohler 1 6l. 



