INDEX. 87 



Clay-State, its aspect and various contortions, 241. Granitic 

 formation, 248. Hornblende, ib. Serpentine, ib. Aspect 

 of granite tracts, 251. Gneiss and mica-slate, 253. Junction 

 of granite and mica-slate, 255 ; with other rocks, 256. Con- 

 cluding observations on the numerous theories to account for 

 the various appearances, and irregularities of the surface of the 

 earth, 25G 



George III., interesting anecdotes of, ix. 293 



Gestation period, at what time it ceases, iii. 39 



Getres, notice of the removal of the glacier of, xvii. 396 



GiESSE (M.), account of a supposed new metal, from the residue of 

 sulphuric acid, xii. 315 



Gilbert (Davies, Esq.), observations of, on the properties of the 

 catenarian curve, with reference to bridges by suspension, 

 X. 230-235 



on the ventilation of rooms, and the ascent of heated 



gases through flues, xiii. 113-120 



investigation by, of the methods used for approximating 



to the roots of affected equations, xiv. 353 

 researches on the vibrations of heavy bodies in cycloi- 



dal and circular arches, &c., xv. 90-103 

 observations of, on the nature and advantage of wheels 



and springs for cari'iages, the draft of cattle, and the form of 



roads, xviii. 95 



on the vibrations of heavy bodies, xx. 69 



Gillan's (Dr.), account of Batavia, its inhabitants, commerce, 

 &c., vii. 1-20, 273-288 



GiLLERON (M.), experiments of, on capillary attraction, xix. 134. 



Giomale di Fidca, analytical review of, iii. 896-405 



GiRARD (M. P. S,), on the attraction manifested at sensible dis- 

 tances by solid surfaces moistened by, and immersed in a 

 liquid, XX. 379-383 



GiRAUD (M.), notice of his memoir on the valleys of Egypt, iv. 98 



Glaciers, alarming progress of, iv. 282 



increase of, in Switzerland, v. 134 



fall of, ix. 426 



