Vol. 21. Philosophical Magazine. April 180^ 



CONTENTS of NUMBER LXXXIII. 



^1^ XXXIV. An Account of the Aerial Voyage undertaken at 

 ^i^|Peter.«btwg1i ion the 30th Of JjMiuary" 1804. Read before the 

 ra^W Academy of Sciences ^y the Academician Sacharop 

 mm. XXXV. A bdef Account of the,- Mtrtcrar Productions of 

 J^^^ Shropshire. 1^ Joseph Plymley, A.M. Archdeacon of 

 ^^S Salop, and Honorary Member of the Board of Agriculture 

 »KjS XXXVI, Oh Metallic Sulphurets. By Professor Pboust 

 Bg|ijljf XXXViL An Analy9i3;bf the magnetical Pyrites; with Re- 

 JJ!^ m^rkfr on'sbme of the ikher Sulphurets of Iron. By Cuaklss 

 ^''' '"g-HAyCHETT, Esq. Kfe.S. -•_ 



(X XXXVIII. Account of «n Aerostatic Voyage performed by 

 ^aM. GuY-LusSAC, on the 29th ofFructidorj. Year 12; and 

 ^'read in the National Institute, Vendemiaire^th) Year 15 

 XX-XIX> On disclosing the Process of ManuiXctories - 

 XL. vAn "Essay oh iVljidical Entomology^ jByF.CHAU- 

 lyitjoU, iihysiciwv ta the Ari^ ; - . ' _ 

 ij;^^ . XLI'. On *he Use made of J&mc in China in regard to Coin. 

 t;§BTB:<^-SAGE 



XLII. On the Use of the Amianthus in China. By 

 ,|oj,B. G. Sage 

 '^%^ XLII I. On the Property ascribed to Quicklime of in- 

 ^^fC creasing the Force of Gunpowder, By M, Lemaistrb, 

 jHjjvpnspector-General of Gunpowder and Saltpetre 

 y^jy XLIV. Description of an improved Drawback Lock for 

 House Doors, invented by Mr. William Bulloch, of 

 i Portland-street - - 



v>iW XLV. Description ef a Screi?- Press with an expanding 

 '*>^^^'>iPower. By Mr. William Bowler, of Finsbury-street 



XLVl. Geographical and Topographical Improvements 

 '^f proposed by John Churchmak, Edq. iVlfetnber of the Im- 

 S] ^perial Academy of Sciences at St. Petersburgh , - 



XLV4 1. Description of • a Safety Valve contJUBing^ a Va- 

 sif^cuum Valyc in the .'ame Hole of the Boiler 

 w>v:'V-"X'LVlIl, Ah Account of the Tea Tree. By Frederick 

 /PiGou. Est}: ■ ■. - ..•■-•. 



XLIX. . An Accoiint of -the Hindu Method of cultivating 

 jthe Sugar Cane, and- manufacturing the Sugar and Jagary 

 in the Rajahmundry District j inft>rspersed with such Remarks 

 ^Ki$>'|as tend to pgin^ out the great Benefit that might be expected 

 ^Jyjffrom ifier'eacing this Branch of Agricultrfr^, and improving 

 fitf^a the Quality bf tbeSu^ar; also the Woces^ observed by the 

 .^.1 |i^) Natives of the Ganjam District. By Dr. William Rox-- 

 *" jfBUHGH - - • - - 



Jl^*\ L. A brief Statement of some Particulars relative to tb* 

 ^j||1Sinking, &c. of William^Pit, near the Sea-Shore, at BranstjT* 

 'Whitehaven, the Property of Lord Viscount LowtheR 

 LI. Proceedings of Lpan>ed and Economical Societies 

 W:}i'^ Lli. Intelligence and Miscellaneous Articles:— Production ofi 

 Mtjriatc- of Swla by the Galvanic Decomposition of Water — ^Voy-o 

 j^l^ages and Travels — Boia'ny, Geology, &t:. — Formation of Water by'^ 

 V/iCompression— Galvanic Experiments — Volcanoes, &c. &c. I 



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TAYLOR AND CO. PRINTER*, ^8, SHOli LANE, rLEET STRKET. 



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