TABLE OF CONTENTS 



TO THIS EIGHTEENTH VOLUME. 



SEPTEMBER, 1807. 



JEngravings of the following Objects : L.CapilJary Actions of Fluids. 2. Ar- 

 i^and's Valve Siphon: 3. Regnier's Powder Prover: 4. BouUay's Apparatus 

 for Phosphoric Ether, 



I. Remarks oiisomi; Difficulties which occur in the Investigation of the Capil- 

 lary Action of Fluids - - - ' - Page 1 



II. On the Solubility of some of the Earths by Means of Sugar. By Mr. Wil- 

 liam Ramsay - - . _ . w q 



HI. Inquiries concerning the assimilating Power in Vegetables f by Mr. Henry 

 Braconnot : read at the Academical Society of Sciences of Nanci, November 

 22d, 1806 - - - - - - 15 



rV. On Vegetable Mucilages. By John Bostock, M. D. of Liverpool 28 



y. Observatiohs on Sulphurous Mineral Waters. By !Mr. Westrumb 40 



VI. Report on a Memoir of Mr. Berthollet, Jun. entitled : Inquiries concerning 

 •the reciprocal Action of Sulphur and Charcoal. BylVIessrs. Fourcroy, Dey- 

 f euxj andVauquelin - - - - "- 43 



VII. Account of the Metallurgic Treatment of Pyritous Copper at the Mines 

 of Chessy and Sainbel, in theDepartment of the Rhone. By Mr. Gueniveau 



• ■ « 51 



Vni. Description of the Valve Siphon of the late Mr. Ami Argand, Inventor 

 of the Lamps with a Double Current of Air - - CI 



JX. Descif[)tion of anew Instrument for proving the Strength of Gunpowder. 



• By Mr. Regnier, Keeper of the central Depot of Artillery^ - 62 



X. Mode of making Phosphoric Ether by Means of a peculiar Apparatus. By 

 •Mr. P. F. G. 'JonlUv, Apothecarv, at Paris. Read before the First Class of 



theJnstitulje, Maiciii"he23d, ISO?' - , . - - 63 



XI. Remarks on the Decomposition of Acetate of Barytes by Means of Soda. 

 By Mr. D'Arcet - - - - *^ - 6(5 



XII. Observations on the preceding Article. By M, L. B. Guytcn, one of the 

 ' Authors of the Annales de Chemie - " - . . 70 



Scientific News. — Imperial Academy of Sciences, ib — ^Discovery of the New 

 Planet by Mr. Olbers, 75~Fluoric Acid in Teeth and Bones, ib— Sulphur 



- inflamed by Oxide of Lead, 77 — YttHa and Cerium, ib— New Process for 

 ' scowering .Wool, 78— Argand's Lamps, ib— Dr. Young's Lectures on Na- 

 tural Philosophy and the xMechanical Arts, 79— Mr, Accum's Lectures on 



• Ckemistry and Mineralogy, 80 



OCTOBER, 



