INDEX. 



mltive gypsum, sg^—Description of 

 his new invented sailing vessel, 820 

 ■Dwandollc, M. on marine plants, 159 



Decomposition of bodies by galvanism, 

 how effected, 27— Of acids and al- 

 kalis, prize question on, 152-^Of 

 certain substances by heat, 382 



Delambre, M. his analysis of the pro- 

 ceedings of the mathematical and 

 physical class of the French Na- 

 tional Institute,, for 18C9, 72 



Delaroche, M. on ichthyology, 240 



Delisle, M. on the poise n of the « pas, 

 314 



Detrey, M. son. his manufacture of 

 thread stockings, 319 



piamond, capable of decomposing 

 water, at a very high temperature, 79 

 -—New crystalline form of, 1 55 



Pisoxidation of oxide and oxidule ,of 

 iron, experimeitts on, 371 



pittany, bastard, experiments on, in 

 proof of the opinion that its flowers 

 emit an inflammable gas, 66 



pum6ril, M. on the sense of smell in 



fishes, 344 



E. 



flarth, its rotation, &c. 72«-Perhaps 

 subject to irregularities, 73 — Its 

 figure, n 



Jldgeworth, L. esq. on a new method 

 of roofing buildings with flag-stones, 

 81__His mode of securing memorials 

 for the informatioji of posterity, 85 



j;dinburgh, Royal Society of, its pro- 

 ceedings, 151.*7rRoyal Medical So- 

 ciety of, prize question by, 152 



Edmonston, Dr. 236 



plectrical energies, how fa* they piay 

 be identified ^\^\v chemical affinities, 

 12 



Electro-chesiiical inquiries, 78 



Emery, 9. s^bstitute for, 155 



Engine, on a new principle, descrip- 

 tion of, 175— Its application, 173 — 

 for extracting foul air, 330 



Ether, its combustion in oxiraurialic 

 gas, 140 



Evaporation, ecoRomical pftocesS ft>r, 

 without heat, wrongly ascribed to ftL 

 De Montgolfier, 1S8 



F. 

 F. D. Answer to his queries relative ta 



the hyperoximuriate of potash, 44 



•Fettstein, apparently the same with 



Swedish' natrolite, 287*-Constituent« 



of, 288 



Filtration of *vater, new method of, 324 



Firo en^jine improved, by an inverse 



application of Archimedes* screw, 78 



Fire escape, anew, description of, 321 



Firs, natural history and arrangement 



of, 202, 295 

 Fishes, respiration of, 312' — Question 

 whether they possess the faculty of 

 smelling, 344 

 Flax, substitutes for, 161,278 

 Forcing-house for griipes on a new con- 

 struction, 109 

 Forster, T. esq.^n Mr, Howard's theory 

 of rain, 142.r-On an occasional in- 

 crease and decrease of the bulk qf the 

 hair of the head, 303 

 Forsyth's method of reanimating ol4 



trees, 5 

 Fossile animals, geological observations 



drawn from, 153 

 Fraicinella, said to evolve hidrogen gas, 

 66*— Experiments in proof, 67 



G. 



Galvanic decomposition, 23, 11€— In- 

 quiry concerning the ratio of the 

 power of igniting wires to the num- 

 ber of plates, 29— Anomalies in Dr. 

 Davy's experiments, i6.— New expe- 

 riments by Messrs. Singer and Cuth- 

 bertson, 31 



Gardening, new practice of, with re- 

 spect to the management of trees, 5 



Gas, evolved from the mixture of sand 

 withhme, 181 



Gas, hidrogen, experiments on its 

 disoxidating oxide of iron, 370 



Gas, oxigen, its combinations with the 



metals from the fixed alkalis, &C.113, 



Ce2 2C2 



