INDEX TO VOL. I. 



ACACIA,experimeiUsonihestrength 



of, 17. 

 Airy (Prof.) on a new analyser, and 

 its use in experiments of polariza- 

 tion, 75 ; on the phasnomena of 

 Newton's rings formed between sub- 

 stances of different refractive powers, 

 -100. 

 Alloys, fusing points of, 264. 

 Ammonia and formic acid formed from 

 hydrocyanic acid and cyanurets, 83. 

 Amniotic acid, on the true source of, 



&c., 319. 

 Analyser, a new, and its use in expe- 

 riments of polarization, 75. 

 Anchors, Pering's improvements in, 74. 

 Andrews (T.) on the blood of cholera 



patients, 295. 

 Antrim, geology of the county of, 



228. 

 Arachnida, on a new species of, 190. 

 Asia, on the negroes of, 466. 

 Astronomical Society, grant of a Royal 



charter to the, 234. 

 Astronomy, researches in physical, 69; 

 Dr. Pearson's Introduction to Prac- 

 tical Astronomy, 370, 450. 

 Atomic weights, on some, 109. 

 Babbage (Mr.) on the economy of ma- 

 chinery and manufactures, 208. 

 Baily's (Mr.) paper on the pendulum, 



379. 

 Barlow's (P., jun.) experiments on 

 Acacia, 17 ; experiments on timber, 

 remarks on, 116. 

 Barometer, periodical oscillation of, 



388 ; on a water-, 387. 

 Basalt, of the Titterstone Clee hill, 



231. 

 Botto (Prof.) on the chemical action 



of magneto-electric currents, 441. 

 Beaumont's (M. de) theory of the pa- 

 rallelism of contemporaneous lines 

 of elevation, remarks on, 118. 

 Bovan (B.) on the cohesion of ce- 

 ments, 53 ; on the strength of tim- 

 ber, 116; on the difference of level 

 between the sea and river Thames, 

 187 ; on the dimensions and value of 

 the measures used in Covent Garden 

 Market, 472. 

 Biela's comet, 401. 

 Birds, on the diving of aquatic, 23. 

 Blackwall (J.) on the diving of aquatic 

 birds, L'3 ; obscrvalions on the house- 



spider, 95 ; on a new species of 

 Arachnida, 190. 

 Blood of cholera patients, researches 



on the, 295. 

 Blowpipe, a new oxy-hydrogen, 470. 

 Boddington (B.) on the effects of a 



stroke of lightning, 191. 

 Bones of the rhinoceros and hyena in 



the Cefn caves, discovery of, 232. 

 Boroughs, on a formula for the relative 



importance of, 26. 

 Boulder-stone, on a large one in Ar- 



gyleshire, 232. 

 Braconnot (M.) on isomeric modifica- 

 tion of tartaric acid, S3. 

 Brewster (Sir D.) on M. Rudberg's 

 memoir on crystals, 146; on a new 

 species of coloured fringes in object- 

 glasses, 19; on the effect of com- 

 pression and dilatation on the retina, 

 89 ; on his formula; for mean tem- 

 perature, 135; on the undulation in 

 the retina excited by luminous points 

 and lines, 169; notes on Prof. Kup- 

 ffer's observations on the tempera- 

 ture of Nicolaieff and Sevastopol, 

 135, 260: remarks on Prof. Rud- 

 berg's paper on crystals, 410; on 

 the action of heat on glauberite, 

 417 ; observations on the isothermal 

 lines, 431 ; on a Chinese mirror, 438. 

 Brown (Mr.) on the impregnation of 

 the Orchidca: and Asclepiadeee, 70 ; 

 on the structure, &c. of Ceplialotus, 

 314. 

 Buenos Ay res, on the discovery of 

 three skeletons of the Megatherium 

 in the province of, 233. 

 Burning cliffs, on the south-east coast 



of Newcastle in Australia, 92. 

 Caffein, composition of, 165. 

 Carbonate of lime, formation of, under 



the influence of sugar, 84. 

 Carlisle's ( Sir A.) letter, with the reports 

 on the health of the workmen cleans- 

 ing the Westminster sewers, 354. 

 Caustic potash, preparation of, 244. 

 Caves of Cefn in Denbighshire, on 



the, 232. 

 Cements, on the cohesion of, 53. 

 Cepltalotus, on the structure and affini- 

 ties of, 314. 

 Challis (Rev. J.) on the resistance to 

 the motion of small spherical bodies 

 in clastic mediums, 40. 



