{ m ) 
I N D E X. 
A 
Aberration of Light, page S7 9* 
Absorption of Polarised Light, 341 . 
Acid, Boracic, found in the crater of Volcano, 186, 396. 
Alabasters, antique, at Rome, 354. 
Algce, Lyngby’s new arrangement of, 282. 
new vegetable, 185. 
Alloy of lead and platinum, 186.— of tin and platinum, 186, 187- 
Alpnach, account of the celebrated slide of, 110. — destroyed, 113. 
Amber, on the optical properties and mechanical condition of, 332. 
Amici’s catoptrical microscope, 135. — on the motion of sap in 
plants, 172. 
Analysis, on the application of a new mode of, to Series, 23. 
Anatomy Comparative, works on, 385. 
Anderson, Mr, on a new atmometer, 64. 
Astronomical Society, 379* 
Atmometer, new one, invented by Mr Anderson, 64. 
Ava, account of a map of, 89, 262. 
Ayrshire Rose, Mr Neill on the, 102. 
B 
Bald, Mr R. on steam, and the sediment in the boilers of steam- 
engines, 340. 
Baltic, charts of the, I99. 
Beaufoy, Col. on the diurnal variation of the needle, 179, 373. 
Beche, m. de la, on the depth, &c. of the Lake of Geneva, 107. 
Beechy, Lieut on the temperature of the Greenland seas, 360. 
BecAmes, account of Mr Paxton’s new method of uniting them, 133. 
Beaudant’s geological observations in Hungary, 396. 
Beryl, optical properties of, 342. 
Bidder, George, the wonderful calculating boy, 193. 
Birds, on the change of colour in their feathers, 271. — Spines on the 
wings of, 190. — Canary bird without feathers, I9I. 
Boi'acic acid, native, found in Volcano, 186, 396. 
Boue, Dr A. oh the volcanic rocks in France and Scotland, 326. 
Braconnot on the formation of sugar from old linen, &c. 363. — on 
a new dye, 383. — on ulmine, 384. 
Brewster, Dr, on the optical properties of Tabasheer, 97* — ^On 
mother-of-pearl, 114, and 118, note. — the inflexion of light, 
151. — On the phosphorescence of fluor-spar, 171. — On circular 
polarisation, 179* — On the axes of crystals, 183, 184, 380. — On 
the optical properties of amber, 332. — On the absorption of po- 
larised light,, 341.— On the mean temperature of the earth, 376. 
Buxhaumia aphylla, account of the, 377. 
C 
Cadell, Mr, on the manufacture of mosaic, 348. — On antique mar- 
bles, 350. 
