TABLE OF CONTENTS. 



NUMBER XXXI.— JULY. p^gg 

 The Bakerian Lecture.— Dr. WoUaston on a Method of ren- 

 dering Platina malleable 1 



Mr. Children's Abstract of the Characters of Ochsenheimer's 

 Genera of the Lepidoptera of Europe ; with a List of the 

 Species of each Genus, and Reference to one or more of 

 their respective Icones {continued) 9 



Mr. Fox's Remarks on Mineral Veins, &c 17 



Rev. J. Blackburn's Description of a Parabolic Sounding Board, 

 erected in Attercliffe Church 21 



Mr. Gray's Attempt to improve the Natural Arrangement of 

 the Genera of Bat, from actual Examination ; with some 

 Observations on the Development of their Wings .... 28 



Mr. Murchison on the Bituminous Schist and Fossil Fish of 

 Seefeld, in the Tyrol 36 



Mr. Miller on the Crystalline Form of Bicarbonate of Am- 



4.0 

 monia *" 



Mr. Major's Analysis of British and Foreign Ships of War 



[continued) *1 



New Books : — Dr. Graham's Chemical Catechism 47 



Proceedings of the Royal Society 51 



, Geological Society 55 



Astronomical Society 66 



at the Friday Evening Meetings of the Royal In- 

 stitution of Great Britain 69 



Origin of certain Brine-Springs in North America ; Former 

 Existence of Rock-Salt in the " Saliferous Rock" of that 

 Country ; Strong Evidence that a high Temperature was con- 

 cerned in the Formation of the New-Red- Sandstone .^ 71 



Equivalent Formation, in England, of the " Sahferous Rock" 



of North America 75 



M. Gay-Lussac on Boyle's Fuming Liquoi- 76 



M. Lassaigne's Purification of Oxide of Manganese 77 



New Patents— Meteorological Observations 78 



Meteorological Observations made by Mr. Booth at the Garden 

 of the Horticultural Society at Chiswick, near London, by 

 Mr. (iiddy at Penzance, Dr. Burney at Gosport, and Mr. 

 Vcall at Boston 80 



NUMBER XXXII.— AUGUST. 



Sir II. Davy's Account of some Experiments on the Torpedo 81 



Prof Enckc on Hadley's Sextant [continued) 84« 



Viscount Cole and Mr. Piiiiip I'^pcrton's Account of the De- 

 Ktruction of the Cave of Kiihloch, in Franconia 92 



Mr. 



