CONTENTS. Y 



JUNE, 1810. 



Engravings of the fallowing Subjects: 1. Apparatus for analysing the Galvanic 

 Pile, by J. A. de Luc, Esq. F. R. S. : 2. Continuous Galvanic Pile, and Gal- 

 vanic Pile variously dissected, by the same. 



I. On the Volcanoes of Jorullo. By Alexander von Humboldt - 81 



II. Chemical Inquiry into the Composition of some Weapons and Utensils of 

 ancient Bronze. By Mr. Klaproth - -' - 8S 



III. On the Black Sand, or Menacbanite, found on the Coasts of Liguria. By 

 D. Viviani, Prof, of Botany and Natural History in the Imperial Academy 

 of Genoa - - - - - - 94> 



IV. Remarks on some Properties of Nickel. By Professor Tourte of Berlin 99 



V. Abstract of a Paper on the Tenacity of ductile Metals, the Changes of 

 Density in Lead by the Operation of Pressure, and the Action of distilled 

 Water on this Metal, read to the Physical and Mathematical Class of the 

 Institute, by Guyton-Morveau - - 102 



VI. Improved Mode of preparing Phosphorus Bottles. In a Letter from a Cor- 

 respondent. - - - - - 105 



VII. Remarks on Professor Leslie's Doctrine of Radiant Heat; with Experi- 

 ments to show, that Caloric can pass through Media without heating them. 

 By J. D. Maycock, Esq. . - - - 108 



VIII. On the Acrid Principle of Horseradish. By Mr. Einhof 111 



IX. Analysis of the Galvanic Pile. By J. A. de Luc, Esq. F. R. S. 1 13 



X. Hints on the Subject of Animal Secretions. By Everard Home, Esq. 

 F. R. S. Communicated by the , Society for the Improvement of Animal 

 Chemistry - - - - - 136 



XL On the Saccholactic Acid, and its Conversion into Succinic. By Mr. 

 Trommsdorif - - - - - 142 



XII. Letter from Mr. Hassenfratz, Chief Engineer and Professor of Mineralogy 

 at the Practical School of Mining, to Mr. Berthollet, on the Oxidation of 

 Iron _-..-. 147 



XIII. On the Muriate of Tin. By Mr. E. Berard, Exprofessor of Chemistry 

 at the Medical School at Montpellier, of the Academy of Garth, &c. 152 



3LIV. On the Formation of Acetic Ether in the Marc of Grapes. By Mr. De- 

 rosne - - • - - - - 157 



XV. Late sown Clover - - - - 15£ 



Scientific News - - - - ' ibid. 



Meteorological Table - - - - 160 



JULY, 



