CONTENTS. Ill 



Page 



XXXI. CONTRIBUTIONS TO METEOROLOGY. Communicated by Mr 

 Foggo, - - - 141 



1. Temperature of Places in Ceylon. 2. Colombo. 3. Trincomalee. 

 4. Temperature of Springs, supposed to be influenced by Thunder 

 Storms, - - 141 — 145 



XXXII. Observations on the Volcanic Formations on the Left Bank of the 

 Rhine. By G. Poulett Scrope, Esq. Communicated by the Au- 

 thor, - - - - - 145 



XXXIII. Analysis of two varieties of Lepidolite. By Edward Turner, 

 M. D. F. R. S. E. Lecturer on Chemistry, and Fellow of the Royal Col- 

 lege of Physicians, Edinburgh. Communicated by the Author, 162 



XXXIV. On Kakoxene, a new Mineral Species. By J. Steinmann, Pro- 

 fessor of Chemistry in the University of Prague. Communicated from 



the Author, - - 163 



XXXV. Notice of some Fossil Remains of a Paleotherium, found in Bavaria. 



By Hermann von Meyer, of Frankfort on the Maine. - 165 



XXXVI. ZOOLOGICAL COLLECTIONS, - - " 16C 

 Observations on the Habits and general Structure of the Orang Ou- 



tang, or Wild'Man of the Woods. By John Jeffries, M. D. ib. 



XXXVII. HISTORY OF MECHANICAL INVENTIONS AND PRO- 

 CESSES IN THE USEFUL ARTS, - - 168 



1. On a Method of Working an Air-Pump by continued Motion. By 



William Ritchie, A. M. Rector of Tain Academy. Commu- 

 nicated by the Author, ib 



2. Account of Mr Brunei's New Power obtained by Liquefied Carbo- 



nic Acid Gas, ib 



3. Account of the Process of MM. Thenard and Darcet for Preserving 



Substances from Humidity, - - 169 



4. Description of new Axle- Trees for remedying the extra friction on 



Curves for Waggons, Carts, Cars, and Carriages, and on Rail-roads, 

 Tram-ways, and other Public Roads. By Mr Robert Stephen- 

 son, - - - - 170 



5. Description of Union or Compound Rods, in which Wood and Metal 



are combined so as to form Rails or Rods for Bedsteads, Cornices, 

 &c By Mr Samuel Pratt, New Bond Street 



XXXVIII. ANALYSIS OF SCIENTIFIC BOOKS AND MEMOIRS, 171 



Observations on Mr Barlow's Theory of the Strength of Materials, and 

 his Conclusions respecting the situation of the Centres of Tension 

 and Compression in a Bent Body. By Eaton Hodgkinson, 

 Esq. Communicated by the Author, ib 



XXXIX. PROCEEDINGS OF THE ROYAL SOCIETY OF EDIN- 



BURGH, ... 1^6 



XL. SCIENTIFIC INTELLIGENCE, - - 177 



I. NATURAL PHILOSOPHY. 



Astronomy 1. Mr Pond's Observations on a New Appearance in the Ne- 

 bula of Orion. 2. Local Attraction of the Plumb-Line. 3. Captain Ross 



