INDEX. 



H. K. on the art of ftavlng, 344 



Holden's tmchine for pei forming the 

 thre Ill-work in Ihoe making, 155 



Holmes, Mijor, 275 



Homberg's ■'jtperiment on oxidation, 90 



Hooka, Dr. his theory of combuftion an- 

 tecedent to that of LivoTier, 91, 162. — < 

 His balance and pendulum fprings for 

 time- keepers, 276, 295, 363 



Hope, Dr. his experiments on the con- 

 . tradtion of witer by hiat at low tem- 

 peratures examined, 128 



Hq ibargh, J.imes, Efq. on the deftruc- 

 . tive effedb of 1 ghtning and its aftion in 

 9 vertical diredtion towards the centre 

 of the earth, 318 



Hortii-ukural Society, report of a com- 

 mittee of, 150 



flot houi'eimi'erf.-£lly onftruiled, 153 



Howard and Allen's preparation of re- 

 agents, 136 



Hutton, Dr. on the formation of coal, 

 197, 203— On the changes which 

 have taken place in the Airface of the 

 earth, 305 

 Huyghens, 166. — His time keepers for 

 difcovering ch- lingituae, 275— -Ob- 

 jedtion to hi'- claim of invention, 363 

 Hjdraulic tnaclunes, 98 



I. 



Jllumination, 22 



Inciuftation left by water In iron Ijnilcrs, 



189 

 Ingram'i m?fk of Schiller, 351 

 Jnqairir'5, fee Qjfvy 

 Jron^ oxidation of, ^24 



J- 



T«welling in time- pieces, advantages of, 



277 

 Juveni^, inqu'rlea from, concerning va- 

 rious futj^'dis lelating to the arts, 189 

 —Anlwered, 190 



Kant's cranium examined, with a yicvir 

 to verify Dr. Gall's fyftem, 351 



Keir, Mr. on the formation of coal, 197 



Kelch, Dr. 351 



Kidd, Dr. on a new mineral foujid in. 

 Cornwall, 134 



Kirwan on combuftion, 163 



Klaproth on the order of precipitation, 

 137 



Klauer's bulls of celebrated charaftcrs, 



3S» 



Klaufch, M. 182 



Knight, T. A. Efq. His horticulturaF 

 report, 150— On the direftion of the 

 radicle and germcn during the vege- 

 tation of feeds, 409 



L. 



Ufifle, 63 



Lagrange, M. his chemical examinatloij 

 of the Dark of white willow, and of th« 

 root of the herb bennet, compared with 

 quinquina, 56 



Lamps, fee Light— An improvement iBj 



a3. 33 



Lapace, on capillary tubes, 249 



Lafteyrie, M. 229 



Lavoifiei's theory of chemiftry, not an 

 original difcovery, but merely an 

 examination and improvement of the 

 labours of many chcmifts who had pre- 

 ceded him, 90, 93, 161, 165, 231 



Lavoifierian theory of galvanic effefts 

 objedled to, 5a 



L'aunay's Jlleftromicroraeter, 350 



Ledlures at St. Bartholomew's Hofpltalj, 

 422 



Lemery on the oxidation of metals, 90, 

 231 



Le Roy's compenfation balance, 233, 281, 

 204.— His escapement, 284, a86. 

 — Controverfy with Berthoud, refpedl- 

 ing time-pieces, 373 



Leflie on light, 164 



i ichtfi 



