CONTENTS. 



■ 6n the constituent Parts of certain attrinsent Vegetable's ; 



'■and on their Operation i?^ Ta/i/nng. By HmrPHRKY 



D^-wV, Esq., Professor of Chemistfi/ in the Royal tir- 



stitution Page 295 



LIV. Letter from J. Hume, Esq. on the Formation of 

 Nitrnus Ether, Itj Means of Altrate of Mercury, and on 



othir Discoveries supposed to be modern 30 j 



LV. A Method if affording Relief to Persons injured by 

 Lightning. Communicated in a Letter from Mr. Isaiah 



• GihT.\:\\T tn the Rev. Mr. Steele 306 



INI. Extracts from the Third P'olnme of the Analyses of 



M. Klaproth 307 



JLVlf. Analysis of the Hinnan Teeth. By W. H. Pepys, 

 jitii'f Esq., P. R.L, Member of the Askesian and British 



Mineralogical Societies ■. 313 



LVIII. On Sharks. % William Tatham, E^^. .. 317 

 i.IX. On Vegetation ; extracted from C. Hassenfratz's 

 Paper on that Subject. By G. J. Wright, Esq. . . 318 

 LX. Observations on. the Use of Stahl's alkalized Oxide of 

 Iro-n ill Calico Printing. By J. M. Ha usman .... 3i33 

 !LXL On an Improvement in the Form of Spectacle Glasses. 

 By Wif. Hyde Woll.astox, M.i>. F.R. S. . ... 327 

 !LXH. Of the general Relation between the Specific Gravi- 

 ties and the Strengths and Values of Spirituous Liquors, 

 and the Circitmstances by which the former cere infueneed 



329 



LXIII. Extract of a Memoir read in the French National 



Institute, on the Strength of the Flax of New Zee/land, 



compared tcith that of the Filaments of the Aloe, of Hemp, 



Flax, and Silk. By C. Labillardieke 341 



LXIV. Sketch of a Geological Delineation of South Ame^ 



rica. By F. A, Von Humboldt 347 



LXV. Description of Mr. Richard Knight's Apparatus 

 for preparing Fluoric Acid, and for Etching on Glass 



357 

 LXVI. Description of the Vulture of Pondi cherry. By 



F. M. Daudin 3 J3 



LXVII. Twelfth Co7?i}nmiiccction from i>r. Thornton, o/i 



Pneumatic Medicine 3C0 



LXVni. N'otices respecting New PubUctttions mid the Fine 



Arts ....;.......;.,.".. , : . .'.' ,'. •. . . . .'. . ;^(54 



LXIX. Proceedings of Learned cmd Economiial Societifsf 



'37! 

 LXX. Inidligencc end Miscellctneous Articles 314 



