INDEX. 



Haray, Mr. his account of inventions 

 for equalising the long and short arcs 

 of vibration in time-keepers, 57— 

 Testimony iri favour of tiie perform- 

 ance of his chronometer, 53 



Hauy, M. on Meionite, 192 — On 

 feldspar, 196 — On a new variety of 

 carbonate of lime, 359 



Haussmann, J. M. on the maddering of 

 Cotton and linen Uircads, and dyeing 

 them Adrianople red and other fixed 

 colours, and on spontaneous inflam- 

 mations, 44 



Henry, Dr his electrical experiments 

 on muriatic acid gas, 376 



Hcrloavt, Thury, M. 360 



Hermbstadt, 14 



Herrara, on the manna of America, 

 311 



Hinge, air-tight, for screens, Sec. 61 



Home, E. Esq. on the spleen, 103 — • 

 On digestion, 187 



Hooker, Mrs. her method of making a 

 composition for painting in imitation 

 of the ancient Grecian manner, 81 



Housebreakers, security against, 177 



I. 



Ignition by compressed air, 204 

 Indian corn, saccharine matter of, 153 

 Inflammations, spontaneous, 46 

 Iron ores of Burgundy, &:c. analysed, 

 and their products examined, 32 



Jameson, Professor, 230, 383 

 J B. on a method of finding the quan- 

 tity of refraction from the distance 

 and altitude of two known stars; and 

 of solving by construction a problem 

 in spherical trigonometry, 201 

 Jewelled clockwork disadvantages of, 

 £;i6 



Kerr, Mr. R. his translation of Lavoi- 

 sier's Chemistry, 233— His theory of 

 the new metals, erroneous, 364 



Kirwan, Mr; 191 



Klaproth on the reduction of earths into 

 metals, 364, 367 



Knight, T. Esq. on the incontrovert- 

 ibility of bark into Alburnum, 5 



L. 



Laizer, M. De, 360 



Lavas of volcanoes, 298, 299 



Lavoisier on nietallic substances, 233, 

 367 



Lectures at St. Thomas's, Guy's and the 

 London Hospitals, 78— On chemis- 

 try, &c. 78 



Lemeri's opinion on manna, contro- 

 verted, 310 



Life-boat, 124 



Lime, carbonate of, new variety of, 

 359 



Lime, compound carbonate of, ana- 

 lysed, 150 



Locker, Admiral, his contrivance for 

 assisting persons in danger of drown- 

 ing, 340 



Log, sea, and sounding machine, 245 



Lothian, East, mineralogy of, 237 



M. 



Mabru, M. Augustus, 360 



IMachine on the principle of the Torri* 



ccllian vacuum, 63^ 161 

 Machine for raising coals or ore. 111 

 Macquer's experiments on the sugar 



cane, -314 

 Malpiglii on the conversion of bark into 



alburnum, 10 

 Manna, examination of, 310 



Marnraff's 



