INDEX. 



Grape-houses! of the Roman'', 149 



Gratiola officinalis, analysis of, 365 



Growth of roots, causes by which it is 

 influenced, S70 



Grignon, M. 74 



Grimstone, tt. esq. 76 



Guyton-Morveau, M. 10— On the art 

 of coating metals with platina, 292 



Gum, yellow, from Botany Bay, ana- 

 lysis of, 310 



Gunnery, problerns ip, 81 



H. 



Hall, M. Esq, on chemical attraction, 

 193 



Haloes, how formed, 43 



Harcourt, Earl, 273 



Harrison, Dr. R. 27 



Hassell, Mr. J. his improvement in the 

 aquatinta process, 220 



Hassenfratz, M. his experiments on the 

 transmission of sound, 103 

 ^-Hatchett, Mr. 293— His artificial tan- 

 nin, 351 



Haiiy, M. on zeolite, 1.3S— His descrip- 

 tion of several new varieties of car- 



^ -bonated lime, 189 



Haussman, M. 351 



Heat, radiant, experiments on, 78, 192 



Heat, specific, of gasses, 78 



Hecht, Professor, see Gerboin. 



Hedge hyssop, analysis of, 365 



Heinekin, M. his experiments on the 

 decomposition of carbonate qf potash, 

 157 



Henry, Dr, 262 



Hericourt de Thury, M. 190 



Hippograph, an invention for conveying 

 intelligence, 126 



Home, E. Esq. 299 — His experiments to 

 prove that fluids pass directly from 

 the stomach to the circulation of the 

 blood, and thence into the cells of 

 the spleen, the gall-bladder, and uri- 

 nary bladder, without going through 

 the thoracic duct, 173 



Haofcer, Mr. 77 



Horsburg, J. Esq. his directions for sail- 

 ing to and from the East Indies, &c. 

 159 



Horticulture, 147, 202, C04 



Hospitals, London, lectures at, 78, 160 



Hothouses, when introduced into Eng- 

 land, 149 



Howard, Luke, Esq. on the natural his- 

 tory of the clouds, 35— See Meteorq- 

 logipal Journal. 



H. T. B. on a mode ef conveying in- 

 telligence from a reconnoitring party, 

 126 



Humboldt, M. Von, 270, 288 



Hume, Mr. on the productipn of a 

 colour from barytes, 34 



Hurra, correction of a mistake respect'^ 

 ing, 279 



Hutton, Dr. C. 134, 240 



Ibbetson, Mrs. A. on the hairs of plants, 

 1— On the mechanical powers in th« 

 leafstalks, 179 



Imaginary quantities, algorithm of, 209 



Indigo yielded from some newly ' dis- 

 covered plants. 278— How affected 

 by nitric acid, 5j1 



Intelligence, mode of conveying, 126 



Iron, cast, examination of a white sub- 

 stance, found in the cavities of, 74 



Iron filings, machine for separatlnjf 

 from extraneous matters, 1-27 



Iron spire, on a new construction, 24.1 



Juck, Mr.^SSl 



Kemp, Mr. G. his method of pre- 

 paring a beautiful and permanent 

 white for water-colours, 33 



Kennedy, Dr. 134 



Kirwan, Mr. 261 



Klaproth. M. his examination of the 

 zeolite, 153— On the analysis of a 

 Chinese gong-gong, -307 



Knight, T. A. Esq. 77— On the forcing- 

 I houses 



