vi CONTENTS. 
Page 
New Spectacle Glasses. .......+se..eeesceeees teecd sevees bovsdcseess $24 
BBG AGIA 5 02 § :ais.ci2siensiscis clvich bas tteemeenloan ae cheer eek deere A Ph ise . ibid. 
Meteorological Table at Kinfauns Castle ..........ceescceeseeeeeceeres 325 
Combination of Prussic Acid and Oil of Peaches ..........-.0seeeeeees ibid. 
Wlew. PAGCwIS 052. écnmcecrncueancanneceetels hide th aecee cues Numemen ees 326 
Meteorological Table aa Observations, Feb. 20 to March 19 ...... SAB Nie yf 
=a 
NUMBER XLI.—MAY:. 
Biographical Sketch of Alexander Wilson ..........- svecvedssecestacs SY 
Observations on the Relation between the Specific Gravities of Bodies and 
the Weight of their Atoms. By Dr. Thomson ............sseeeee - 343 
Demonstration of the Binomial Theorem for Fractional and Negative 
PRVOUET swore pe wists ceaes + oa wear aektare sited koma hs COE a orice J 346 
Experiments on Prussic Acid. By M. Gay-Lussac............04+ bees. 350 
Meteorological Table from the Register kept at Rose-Bank, Perth ...... 864 
ken of the Bird Fly. By M. W. Carolan.......... 0.000006 eee 366 
——————— a new Blow-pipe. By H.I. Brooke, Esq.............45 367 
Account of a Trial of Dr. Reid Clanny’s Lamp in some of the Newcastle 
Coal-Mines. , By Dr. Clanny.... o/s 3s .seeidis oisieie bia h cialis dale RSG .. 868 
Analytical Account of Humboldt and Bonpland’s Work on the Plants of 
* South America 
4 minis» sphdipcmial~ doing = eppegitubthis'e<le's ole is MMe eee + 373 
Proceedings of the Linnzan Society, April 2.,.......sesseesesecseeees 386 
Geological Society, Feb. 16 and March 1 .......... ibid. 
——_——_———. Wernerian Natural History Society, Nov. 25, Dee. 
16, Jan. 6, 20, Feb. 3, 17, March 2, and6...:.....00b. ole. eed Y B87 
Royal Institute of France.......... sssdtleesebeee 391 
Wotices'of Lectures. . ... o<despkje-svdis doth oGieeuee LURE MU Sonne 396 
Cure of Hydrophobia .. ,),.. s-'s,.'s0 snail asbesoe WeRied.s erate seat ibid. 
Extraordinary Preservation of Animal Life without Food ..........0.+. ibid. 
Prench Academy of Science .. ....0»9.sd «ta seanleledid. LUGE aeees te teee eee 307 
On Fermentation by Gay-Lussac.. .....cncnecccrersecewedeetembeaceee 398 
Method of obtaining pure Suljthate of Manganese .........0e00seeeeeeee ibid. 
Native Carbonate of Strontian...........sssdirs ag e¥tewek eee tee te 899 
‘Weight of an Atom of Strontian .....:....... coal REG WP ibid. 
Number of Planis known................ vie cle can eit tlentaencre oe Sane 401 
Sonn Ver dignis 22. 5 Sisk ats Ke awh ons s yewie «tg RPT ILA RMT NT ee alte <..-ibid 
a AOLIG 6 Saye eatin b'c's soi yy ees vacccsacceeadlgwaleacs 10 2a ibid. 
Blue Mineral from Westvits ..... 5, 5..00cceccceadecescetsit Qiao 402 
Anhydrite from Tlefield, in the Hartz.........c.sceecceeeceusesececsees 403 
Indurated Carbonate of Magnesia ............ccesssvesecsdeerceeceee 404 
COMBS Fe 2 oC EN es Oe So o3's o fe fv osnvapeegn ( OL ibid. 
Scientific Works in the Press ....$5....6.0..c0seusccseeceevccunees 406 
Meteorological Table and Observations, March 20 to April 18 ti.5 407 
