INDEX. 



383 



Simond, M. L. on ' the eruptions ot 

 Mount -^tna, 310 — Account of the 

 large chestnut tree of Mount ^tna, 

 314 



Society of Arts, proceedings of, 3f>3 



Societies, proceedings of, 174, 3fi2 



Sound, velocity of, in the Arctic Regions, 

 368 



Sounding board, account of a new one, 

 357 



Spots on the sun, 13 



Springs, on burning ones in America, 

 321 



Stabiae, on the buried city of, 1 14 



Stark, John, Esq. his Elements of Natu- 

 ral History analysed and recommend- 

 ed, 164—173 



Stars, on Nebulae and clusters of, 282, 

 on double ones, 301 



Stewart. Dugald, Esq. biographical sketch 

 of the late, 193 



Storm in the desert, account of one, 319 



Stylidium graminifolia, on the sensitive 

 properties of the, 185 



Sympiesometer, on its defects for mea- 

 suring heights, 334 



Temperature, mean of Bombay, 17 



Temperature mean, of Falmouth, 178 — 

 of Military posts in theUnited States, 

 267— of mines, 234— of Raiatea, 280 



Thermometer, on self- registering ones, 



159 

 Threlkeld, Rev Mr, his meteorological 



observations at Raiatea, 280 

 Thunder storms, account of two remark- 

 able ones in Worcestershire, 81 

 Tin mines of Cornwall, 180 

 Tourmaline, electrical properties of, 50 

 Tregaskis, Richard, Esq. on the law of 



the expansion of vapour, 68^ 72 

 Turtle fossil, 185 



Type-founding in Scotland, history of, 5 

 Ultramarine, on the process for making 



it, 359 

 Vapour, on the law of its expansion, 68, 



72 

 Vesuvius, on the height of, 135 

 Vessel, on an ancient one found in the 



river R other, 56 

 Walker, James, Esq. on the resistance of 



fluids, 355 — his comparison of water 



and land carriage, 356 

 Weston, C. H. Esq. on the penetration 



of water into bottles immersed in the 



sea, 144 

 Wilson, Prof. Alex., life of, 1 

 Williams, John, Esq. on two remarkable 



thunder storms, 81 

 WoUaston, Dr, his bequest to science, 



186 — his differential barometer, 354 



DESCRIPTION OF PLATES IN VOL. X. 



PLATE I. Fig. 1, New Steam-Engine Valve, p. 42. 



Fig. 2, Situation of the Ancient Vessel found under the old bed of 

 the River R other, p. 56. 



Fig. 3, Stroke of Lightning on the Spire of St Andrew's church in 

 Worcester, p. 82. 



Fig. 4, Interesting Formation of Clouds at the entrance of Ply- 

 mouth Sound, p. 148. 



Fig. 5, Mr Forbes's Self- Registering Thermometer, p. 159. 

 PLATE II. Fig. 1, 2, 3, Represents a Niew Gravimeter invented by Don Busta- 

 mente of Mexico, p. 207- 



Fig. 4, 5; 6, 7, Diagrams illustrative of Commander Pearse's paper 

 on Anchors, p. 220. 



Fig. 8, Diagrams illustrative of Mr Kenwood's paper on the Tem- 

 perature of Mines, p. 239. 



Fig. 9, 10, Represent the New Sounding Board invented by tlie 

 Rev. Mr Blackburn, p. 357. 



Fig. 1 1, Represents Mr Gibson's Pneumatic Medical Spoon, p. 360. 



EDINBURGH : 

 raiNTED BY JOHN STARK, 



Old Assembly Close. 



