CONTENTS. 



XVITI. Proceedings of Learned Socieiics SO 



XIX. InieU'gencif and Miscellaneous Articles .. .. 87 



XX. ykcQvnt of the Goafs of Angora: in a Letter from 

 M. Chancey to ]\L Pi.TET of Geneva . . . . 97 



XXI . Description of a Machine by which all the Thread-work 

 in Shoe-viukinii may be done in a standing Post7ire. By 

 Mr. Thomas iJoLDEN, of Fettleworth, near Petworth, 

 in Sussex 1 02 



XXIf. yJn Essay on Commercial Policy. By J. B. Galt, 

 Esq. London 104 



XXI IT. JSluriatic Solution of Tin in pari decomposed inta 

 metallic crystallized Tin. By M. Bucholz . . 112 



XXIV. On muscular Motion. By Anthony Carlisle, 

 Esff. F.R.S.: being the Croonian Lecture. Read be- 

 fore the Royal Society, November 8, 1£04 . . . . 113 



XXV. Account of Mr. Arthur Woolf's' iicw Lnprove- 

 ments on Steam- Engines 123 



XXVI. Extract of a Letter from M. WisCK, ofTreysa, 

 on a new Acid found in yllkaline Prussiates . . \^^ 



XXVI I. Chemico- Galvanic Observations. By IM. Oer- 



STKD 129 



XXVlfl. On the Art of Aqvatinta Engraving; witha^ 

 Description of an Apparatus to prevent the Inconvenience 

 which Artists experience from the Fumes which are pro- 

 duced by the Action of the Acid employed in the Process 



130 



XXIX. On pure Nickel, discovered to be a noble Metal; on 

 its Preparation and Properties. By J. R. RrcHTKU 137 



XXX. Account of' a new F^egetahle Substance discovered 

 by M. Hose .. .. 142 



XXXI. Facts relative to the Torpid State of f lie North Ame- 

 rican Alligator. By Benjamin Siviith Barton, M.D. 



143 

 XXXIT. Process for obtaining pure Cobalt. By J\[. Troms- 



DORFF 145 



XXXIIT."07^ a Method of analysing Stones containing fixed 

 Alkali, by Means of the Bora' id Acid. By Humphry 

 Davy, Esq. F. R. S., Professor (f Chemistry in the 

 Royal Institution 140 



XXXIV. ObservfJiowi on the si/tgnlar F;'j;ure of the Planet 

 Saturn. By William Herscuel, LL.D. F.ILS. M7 



XXXV. Erperimcnts and Observations upon the Contrac- 

 tion of IVater by Heat at low TcmperatJires. By Tho- 



. . MAS Charles Hope, M.D. F.R.S. Edin., Professor of 

 Chemistry ill the University of Edinburgh .. .. 153 



'CXXVI. 0/^ an artificial Substance which po'^'^csses tfic prin- 

 cipal characteristic Properties of l\innin. Bi; CnAHLES 

 Uvrcnv.rr, Esq. F.^.S. . .. .'. , 173 



