1036 



INDEX. 



Atmosphere, retrograde movements in 

 the tides of, 934. 



— — , humid condition of, 990. 



Atmospheric tide, lunar, 663. 



Attraction, universal law of, as a parti- 

 cular case of approximation, &c., 831. 



Aurora borealis seen Nov. 1848, 790 ; 

 appearance of elliptic ring and radiant 

 beams, meteors visible ; disturbance of 

 magnetic needle ; red tints caused by 

 the moon's light, 791. 



seen Nov. 17, 1848, 809 ; electrical 



action during, extraordinary coronary 

 apex, 810 ; fall of rain and change of 

 v»^ind caused by, 811. 



seen at Montreal, Aug. 1849, 911. 



Azote, ozone a constituent of, 508. 



Baggs, (1.) on the disruptive discharge 

 of accumulated electricity, and the 

 proximate cause of lightning, 731. 



Baily (Francis), obiiuary notice of, 524. 



Bainbridge (Col.), an account of a pro- 

 tracting pocket sextant, 563. 



Bakerian lecture, bv W. R. Grove, 657. 



, by Mr. Faraday, 780, 994. 



, by Professor Graham, 897. 



Bands, seen in tlie spectrum, theorv of, 

 795, 796. 



Barlow (Admiral Sir R.), obituaiy notice 

 of, 527. 



Barlow, (P.W.), investigation of the power 

 consumed in overcoming the inertia of 

 railway trains, and of the resistance of 

 the air to the motion of railway trains 

 at high velocities, 606. 



Barlow (\Y.H.) on the existence of alter- 

 nating diurnal currents of electricity at 

 the terrestrial surface, &c., and their 

 connection with the diurnal variation 

 of the horizontal magnetic needle, 682 ; 

 postscript, 727. 



Barometer, ranges of, on board the Alfred 

 in the river Plate, 509. 



, movements of, connexion with 



wands, 556. 



, affected bv moon's declination, 



560. 



, changes in, during moon's passage 



over the meridian, 663. 

 Barometry, essays on, 548. 

 Bases, raetalHc, law of development of 



heat during substitution, 732. 

 — — , obtained by putrefaction ; volatile 



organic, always found on the generation 



of ammonia, 842. 

 Basevi (G.), obituary notice of, 582. 

 Basic substitutions, thermal changes in, 



497. 



Beck (T. S.) on the nerves of the uterus, 

 562. 



Beck (T. S.), royal medal awarded to, 

 575. 



Beechey (F. W.), report of experiments 

 made on the tides in the Irish Sea, on 

 the similarity of the tidal phenomena 

 of the Irish and English Channels, &c, 

 743. 



, Report upon further obsenations 



of the tides of the EngHsh Channel, 

 &c., with remarks upon the laws by 

 which the tidal streams of the English 

 Channel and German Ocean appear to 

 be governed, 817. 



Bees' wax, cerotic acid in, difference be- 

 tween that of Europe and Ceylon, 749. 



Belemnite, interesting specimen ofj 

 structures in, heretofore undetected, 

 747 ; entirely distinct from the belem- 

 noteuthis, 747, 920. 



Belemnites, description of, 505 ; struc- 

 ture and affinities of, 506. 



and other fossil remains of cepha- 

 lopoda, observations on, 746, 920. 



Belemnoteuthis, phragmocone of, com- 

 parison and difference between that of 

 belemnite, 747, 920. 



Beneke (W.) on the physiology and pa- 

 thology of phosphate and oxalate of 

 lime, and their relation to the forma- 

 tion of cells, 979. 



Benzoline, a new organic salt-base, 555. 



Beron (P.), les causes du magnetisme 

 terrestre prouvees, 978. 



Berthon, (E. L.), description of the hy- 

 drostatic log, 919, 



Berzelius (J. J.), obituary notice of, 872. 



Bessel (F. W.), obituary notice of, 644. 



Birds, motion in the spine of, 605. 



, structure and development of liver 



in, 694. 



Bishop (J.) on the physiology of the 



human voice, 624. 

 Bismuth, electro-magnetic experiments 



with, 742. 



, m.agnetic properties of ; vibrations 



of crystals of in the magnetic field ; 

 magne-crystallic axis of; effect when 

 immersed in water or solution of sul- 

 phate of iron, 780; extra magnets affect 

 the position ; the line or axis of mag- 

 necrystalUc force, 781. 



Blair (D,), remarks having reference to 

 the earthquake felt in Demarara in 

 August 1844, 542. 



Bleaching principle, new, produced by 

 combustion, and properties of, 543. 



Blood corpuscles, changes in, 544 ; of in- 

 sects and the vertebrata compared, 

 546. 



Blood corpuscle, phases of development 

 of, 558 ; iron in, 559. 



