TABLE OF CONTENTS 



TO THIS TWENTi'-EIGIITH VOLUME. 



JANUARY, 1810. 



Entrarines of the following Subjects : 1. A Machine for producing small Quan- 

 tities of Electricity, by J. A. De Luc, Esq. F. R. S. 2. Delineations and Dis- 

 sections of various luniiDOUs Animals, from James Macartney, Esq. 



I. Experiments concerning the Electric Machine; showing the Electric Effects 

 of Friction between Bodies. By J. A. De Luc, Esq. F. R. S. - 1 



II, Comparative Examination of the Mucous Acid formed by the Action of 

 Nitric Acid on Gums and on Sugar of Milk. By A. Laugier. - 14 



in. Chemical Analysis of a Black Sand, from the River Don, in Aberdeen- 

 shire; and of a Copper Ore, from Airthrev, in Stirlingshire. By Thomas 

 Thomson, M. D. Lecturer on Chemistry, Edinburgh - 19 



IV. Researches on the Oxinuiriatic Acid, its Nature and Combinations; and 

 on the Elements of the Muriatic Acid. With some Experiments on Sulphui* 

 and Phosphorus, made in the Laboratory of the Royal Ijistitution. By H, 

 Davy, Estj. Sec. R. S. Prof. Chem. R. I. F. R. S. E. - 31 



V. On tiie Culture of Parsneps, and their Utility in Feeding Cattle: By Charles 

 Xjc Hardy, Esq., of the Island of Jersey. - - 37 



VI. Obsenations upon Luminous Animal*. By J. Macartney, Esq. Com- 

 municated by Everard Home, Esq. F. R. S. - " ~ 41 



VU. Hints on various Modes of Printing from Autographs. By G. Cumber- 

 land, Esq. In a Letter from the Author. - - 56 



VIH- On the Classification of Chemical Agents. By Marshall Hall, Esq. 

 F. R. M. S. E. In a Letter from the Author - - 59 



IX. Remarks on Military Rockets; by Mr. Hume. In a Letter from the 

 Author - - • - - - 63 



X. Rrniarks on the Nature of the nfw Mt;taN, Potassium and Sodium, in 

 AnbwtT to Mr. Dalton. In a Letter iVoni a Correspondent - 67 



XI. Observations on the Diminution of Dilalibility of Spirit of Wine Ther- 

 mometers ; hy Honors Flaugergues - - - 73 



XTI. Anah-sis of the Amphibole of Cape de Gattes, in the Kingdom of Gre- 

 nada: byMr. X^ugicr - - - - 75 



Scientific News - - - - - 77 



M elcorological Journal - t - • - go 



FEBRUARY 



