VI1L CONTENTS OF VOL. XXXVII. THIRD SERIES. 



Page 

 Mr. A. J. Robertson on the Positive Wave of Translation. 



(With a Plate.) 512 



Dr. Hare on the Explosiveness of Nitre, with a view to elucidate 



its agency in the tremendous explosion of July 1845, in New 



York : 525 



Preparation of Atropia by means of Chloroform, by M. Rabourdin 542 

 On the Composition of certain natural Organic Bases, by M. A. 



de Planta 543 



On Spots on the Sun, by Prof. Colla 545 



On the Chemical Equivalent of Iron, by M. E. Maumene .... 546 

 Index 547 



PLATES. 



I. Illustrative of Mr. P. Clare's Paper on Thunder- Storms and extraor- 

 dinary Electrical Phenomena. 



II. Illustrative of Mr. Bryce's Paper on Striated and Polished Rocks and 

 "Roches Moutonnees" in the Lake District of Westmoreland. 



III. Illustrative of Mr. A.J.Robertson's Paper on the Positive Wave of 

 Translation. 



IV. Illustrative of Mr. G. Walker's Paper on the Theory of anew species 

 of Locomotive Vessel. 



