ii CONTENTS. 



OCTOBER 1802. 



Engravings of the following Objects i 1. View and Plan of a new moveable 

 Crane, erecled for Ramigate Harbour, by Mr. Keir; 2. Haas's Blow-pipe 

 Apparatus; 3. Figures to illuftrate the Formation of Bafalt, &c. by Mr. 

 Jamefon ; 4. Elements of the Galvanic Pile, by Dr. Boftock j and, 5. Diftin- 

 guifhers of Galvanifm and Electricity. 



I. Obfervations upon fome remarkable Wells near the Sea Coaft at Bright- 

 helmftone, and other Places contiguous. By the Rev. W. Pearfon, 

 P. R. I. - - - - - Page 65 



II. On the Theory of Galvanifm. By John Boftock, M. D. From the Au- 

 thor. - - - - 69 



III. A Summary of the ntoft ufeful Parts of Hydraulics, chiefly extracted 

 and abridged from Eytelwein's Handbuch der Mechanik und der Hydraulik. 

 Berlin, 1801. By Thomas Young, M. D. F. R. S. - 79 



IV. Experiments and Obfervations on certain ftony and metalline Subftances, 

 which at different Times are faid to hav« fallen on the Earth ; alfo on va- 

 rious Kinds of native Iron. By Edward Howard, Efq. F. R. S. From 

 the Philofophical Tranfaaions, 1802. -. - - 88 



V. On the Colours obtained from Metallic Oxides, and fixed by Means of 

 Fufiou on different Vitreous Bodies. By Alex. Brongniart, Director of the 

 National Manufactory of Porcelain at Sevres, Engineer of Mines, &c. 101 



VI. Examination of the fuppofed igneous Origin of the Rocks of the Trapp- 

 foimation. By Mr. Robert Jamefon. From the Author. - 111 



VIT. Defcription of the Blow-Pipe Apparatus of Haas. From a Correfpon- 

 dent. - - - - - - 119 



VIII. Note refpe&ing the Inftruments by which the two Kinds of Electricity 

 are diftinguifhed, or its Direction afcertained. W. N. - 121 



IX. Section and Plan of a moveable Crane, capable of heaving four Tons 

 with four Men. Defigned and executed for the Pier at Ramfgate, by 

 Order of the Truftees for the Management of the Harbour at that Place. 

 By Mr. Peter Keir, of St. Pancras. Communicated by Mr. Peter Keir. 124 



X. Experiments on the Separation of Light and Heat by Refraction. In a 

 Letter from Sir H. C. Englefield, Bart. F. R. S. to Thomas Young, 

 M. D. F. R. S. From the Journal of the Royal Inftitution, p. 202. 125 



XI. On the Expanfion of the Elaftic Fluids by Heat. By Mr. John Dal- 

 ton. ------ 130 



XII. Account of fome Experiments made in the Laboratory of the Royal 

 Inftitution, relating to the Agencies of Galvanic Electricity, in producing 

 Heat, and in effecting Changes in different fluid Subftances. By H. Davy, 

 Prof. Chem. ----- 135 



Scientific News. National Inftitute of France— Prize propofed at the Public 

 Sitting of the 15 Germinal, in the 10th Year. (April 5, 1802.)— Subjea 

 of the Prize of Chemiftry— Prize Queft^ns from the Batavian Society at 

 Haarlem— Sixth Defcent of Gainerin with biz- Parachute. 139 to 143 



4 NOVEMBER 



