CONTENTS. 



DECEMBER, 1811. 



Eaigravmgs of the following Subjects: 1. Pians and Sections of a Spire of a new 

 Construction, lately erected a.t Edgeworthstown, by R. L. Edgewortli, Esq. 

 F. R. S. M. R. I. A., &c. 2. Diagrams for the Demonstration of the Fuu- 

 daBieiital Property of the Lever, by D. R. Brewster, LL. D. F. R. S. Esq. 



I. Description of a Spire of a new Construction, at Edgeworthstown, combining 

 the Advantages of Cheapness, Elegance, and Durability. lu a Letter from 

 Richard Lovell Edgeworth, Esq. F.R.S. M. R. L A. &c. - 241 



IL Experiments on some Preparations of Gold : by Mr. Vauquelin - 248 



IIL Experiments on Human Bones, as a Supplement to the Paper on the Bones 

 of the Ox ; by Messrs. Fourcroy and Vauquelin. - . - - 237 



IV. Letter from Mr. Berzelius to Mr. BerthoUet on the Analysis of different 

 Salts. 269 



V. Account of a Substitute for Leghorn Rait, for Hats, &c. By Mr. William 

 Corston, of Ludgate Hill. - - - - - - - 273 



VL Correspondence of Dr. William Roxburgh, of Calcutta, with Dr. C. Tay- 

 lor, Secretary to the Society of Arts, Sec. on various Drugs. - 275 



VII. Demonstration of the Fundamental Property of the Lever, by David 

 Brewster, LL. D, F. R. S. Edinburgh, - - - 280 



VIIL On the Nature of those Meteors, commonly called Shooting Stare. Ta 

 a Letter from John Farey, Sen. Esq. --.-_- 2SS 



IX. On the Causes of the Decay of the Timber in Ships, and the Meaus of 

 preventing it. In a Letter from a Correspondent. - - - 287 



X. On the Art of Coating Metals with Platina : by Mr. Gu>ton-Morveau 292 



XL Experiments and Observations on the diiFerent Modes in which Death i« 

 produced by certain vegetable Poisons, by B. C. Brodie, Esq. F. R. S. Com- 

 municated by the Society for promoting the Knowledge of Animal Che-r 

 "iistry. - - '295 



XIL Analysis of a Chinese Gong-gong: by Mr. Klaproth. - - 301 

 XIIL Meteorological Journal. - - - - - . _ 3q^ 



XIV. Chemical Examination of the yellow Resin of the Xanthorrhcea HastiKs, 

 and of the resinous Cement employed by the Savages of New Holland to fix. 

 theStoncof their Hatchets: by Mr. A. Laugier. - - - ^10 



XV. Note on the Precipitation of Silver: by Mr. Gay-Lussac. - 318 



XVL Table expressing the Quantities of Sulphuric Acid at 6e» [spec grav 

 1-B42] contamed in Mixtures of this Acid and Water, at different Degrees of 

 the Areometer.- by Mr. Vauquelin. " - - -2,9 



SUPPLEMENT 



