INDEX. 



Euler, 166 



Experiments In fluids, 356 



Eye-pieces, achromatic, 388 



F. 



Fata morgana, how produced, 341 

 Feathers cleared of animal oil } procefs 



described, 266 

 Fergufjn's Leftures, 189, 388 

 Flfh-oil ufed in paints, 258 

 Fluids, cohefion of, 74 



Fluoric acid in wavellite, 267 



Forcing the growth of trees detrimental, 



154 

 Fordyce, Dr. on faliva, 149 

 Fortifications, ancient, in North America, 



27? 



Fourcroy on chemlftry, 162 



Francke, Mr. 182 



Franklin, Dr. on fwimming, 326 — His 

 difc )very that lightning and ele£lricity 

 are the fame, 416 



Frifius, Gemma, firft propofes to deter- 

 mine the longitude by means of a chro- 

 nometer, 275 



G, 



Galileo's invention of the pendulum, 



334 

 Gall's craniologic fyftem, 350 

 Galvanic Society of France, 350 

 Galvanifm, experiments in, and obferva- 

 tions on, 50. — Objections to, 94.— 

 Ufefully applied in analyfes, 137.— 

 Doubts refpefling the fuppofed produc- 

 tion of muriatic acid from vater, 



34i 



Garden vegetables, their primcvaj i^ate 

 but little known, 150 



Gibbes, Dr. on the portion of iroq con- 

 tained in the Bath waters, 343 



GoifEn, M. on the mode of building 

 praftifed in the vicinity of Lyons, 

 214 



Gold, fadls towards a history of, 238, 

 ?3X 



Grafting of trees, 152 



Graham's compenfation pendulum, zSp 



Grape fugar, 178 



Gravity fpecific, of bodies, 308 



Greek manufcripts probably exifting in 



Ruffia, 351 

 Greu, on light, 165 



Guaicum, chemical experiments on, 389 

 Gunr, Dr. 63 

 Gwennap mineral defcrlbed and anal}2edy 



»34> 138 



H, 



Hales, Dr. on the increafe of weight ia 

 the oxidation of metals, 90.— On the 

 increafed weight of calcined metals, 

 232, 236 



Hail, Sir J. his experiments fhcwing the 

 effefts of compreffian in modifying the 

 action of heat, I3, 113, 196, 302, 



3H 



Halkr on faliva, 149 



Hamil), H. Jun. £fq. on the meafure of 

 a fhlp's velocity, 343 



Hamilton, Dr. his portable barometer 

 compared wlch that of Sir H. C. 

 Engle field, 2 



Hapell de la Chenaie, on Saliva, 149 



Harding's repofitory of agricultural pub* 

 lications, 213 



Hardy's method of rendering all the vi- 

 brations of a balance equal, 387 



Harris, Rev. Mr. on the ancient works 

 refembiing fortifications in Nortlk< 

 America, 271 



Harrifon's improved time- piece, 278 



Hatchett, Mi. 118. — His ex^m. nation of 

 the ore of colarabium, 18 t —His ac- 

 count of natural fubftances allied to 

 coal, 201 

 H. B. K. on the manner In which the 

 gafes are afforded in water by gal*- 

 vanifm, 50 — Remarks on, 94 

 Heat, experinienfs on, 13, 113, 161, 196, 



302, 314 

 Heat in liquids, propagation of, 353 

 Heron's theory of chemiftry, 162 



b 2 H. K. 



