xviii 



An Experimental Inquiry into what takes place during the Vinous, 

 the Acetous, and different Putrefractive Fermentations of dissolved 

 Vegetable Matter : and an Examination of some of the Products. 

 By Robert Rigg, Esq. .....page 406 



On the Chemical Changes occurring in Seeds during Germination. 

 By Robert Rigg, Esq 408 



A Comparison of the late Imperial Standard Troy Pound Weight with 

 a Platina copy of the same, and with other Standards of authority. 409 



On the Application of a New Principle in the Construction of Voltaie 

 Batteries, by means of which an equally powerful current may be 

 sustained for any period required ; with a description of a sustain- 

 ing battery recently exhibited at the Royal Institution. By Fre- 

 derick W. Mullins, Esq. M.P. F.S.S 410 



Anonymous Essay, entitled, Scoperta della Causa Fisica del Moto. 410 



An Experimental Inquiry into the Modes of Warming and Ventilating 

 Apartments. By Andrew Ure, M.D. F.R.S 411 



An Experimental Inquiry into the Relative Merits of Magnetic Elec- 

 trical Machines and Voltaic Batteries, as Implements of Philoso- 

 phical Research. By William Sturgeon, Esq. Lecturer on Natural 

 and Experimental Philosophy at the Honourable East India Com- 



pany's Military Academy, at Addiscombe 412 



Welt Mechanik. By M. Kropalschek 413 



Plan et Essai d'un nouveau Catalogue Sideral, avec une representation 

 graphique, et une loi de simple et reguliere distribution des 6toilea 

 autour du Pole, qui pourra fournir plusieurs avantages a l'Astro- 

 nomie pratique. By Professor Joseph Bianchi, Superintendent of 

 the Observatory at Modena 413 



On the Composition and Decomposition of Mineral Waters. By the 

 Rev. George Cooke, LL.B 414 



Inquiries concerning the Elementary Laws of Electricity, Part II. By 

 William Snow Harris, Esq., F.R.S 414 



A New Theory of the Constitution and Mode of Propagation of Waves 

 on the Surface of Fluids. By H. J. Dyar, Esq. 414 



Researches in the Integral Calculus. Part lit By Henry Fox Talbot, 

 Esq. F.R.S . 417 



Investigation of New Series for the Rectification of the Circle. By 

 James Thomson, LL.D. Professor of Mathematics in the University 

 of Glasgow................. ^ 417 



Inquiries respecting the Constitution of Salts, of Oxalates, Nitrates, 

 Phosphates, Sulphates, and Chlorides. By Thomas Graham, Esq. 

 F.R.S. Ed. Professor of Chemistry in the Andersonian University 

 of Glasgow, &c. 418 



Report upon a Letter addressed by M. le Baron de Humboldt to His 

 Royal Highness the President of the Royal Society 418 



Further Observations on the Optical Phenomena of Crystals. By 

 Henry Fox Talbot, Esq. F.R.S. 455 



First Memoir on the Theory of Analytical Operations. By the Rev. 

 Robert Murphy, M.A. F.R.S. Fellow of Caius College, Cambridge. 456 



Observations and Experiments on the Solar Rays that occasion Heat ; 

 with the application of a remarkable property of these rays to the 



