608 



INDEX. 



Sopwith (T.) on the illustration of geolo- 

 gical phenomena by models, 1 70. 



Sounds, on the production of audible, 247. 



South America, on the erratic boulders 

 and contemporaneous unstratified de- 

 posits of, 536. 



Star, on a new binary, 241. 



Stariield.on ahobservatory erected at,576. 



Stars, supplemental catalogue of, 243 ; 

 shooting, 347 ; present state of our 

 knowledge relative to, 547 ; revision of 

 the nomenclature of the, 5 71 ; mean po- 

 sitions of the, 580 ; new catalogue of 

 moon-culminating, 581. 



Statics,chemical,of organized beings,337, 

 456. 



Steam, electricity of effluent, 25, 88, 



Stenhouse (John) on the action of per- 

 oxide of lead on cinnamic acid and on 

 salicine, 38. 



Storms, on the theory of, 423. 



Stibio sulphurets, 283 ; of sodium, 284. 



Strata, on the occurrence of triassic fishes 

 in British, 522. 



Stromeyer (M.) on the formation of ar- 

 seniuretted hydrogen, 185. 



Strontian, malate of, 313. 



Sturgeon of the Dublin markets, 591. 



Succino-hyposulphuric acid, 447. 



Sulphuric acid, action of, on nitrate of 

 ammonia, 251: concentration of nitric 

 acid by means of, 252 ; action of, on 

 protosulphate of iron, 502. 



Sutherland (Dr. John) on the polariza- 

 tion of the chemical rays of light, 52. 



Talbot (H. F.) on calotype photogenic 

 drawing, 88, 164. 



Telescope, dioptric, description of a, 578 ; 

 account of a large reflecting, 584. 



Thermometer, on a new electric, 391. 



Thierry (M.) on guaiaic acid, 413. 



Thompson (M.) on a boring in search of 

 water at Longfleet, near Poole, 526. 



Tin, action of copper on, 482. 



Toynbee (J.) on the non-vascularity of 

 certain animal tissues, 160. 



Traite de Mecanique of Poisson, remarks 

 on a statement in the, 287. 



Transits and occultations observed at 

 Washington, 326. 



Turpentine, oil of, 187. 



Turtles, fossil remains of, in the chalk 

 formation, 157. 



Ure (Dr. A.) on the successive strengths 

 of pyroxylic spirit, 511. 



Urea, preparation of, 184. 



Urine, lactate of urea in, 253. 



Uterus, on the nervous ganglia of the, 487. 



Venus, on the correction of the elements 

 of the orbit of, 575. 



Verneuil (M. E. de), and K. I. Murchison, 

 on the geology of the northern and 

 central regions of Russia, 489. 



Vision, on a case of restored, 156. 



Voelckel (M.) on the compounds of cya- 

 nogen with sulphuretted hydrogen, 449. 



Voltaic batteries, on, 276. 



Voltaic pile, improvements in the, 591. 



Walker (C. V.) on electrotype manipula- 

 tion, 246 ; relative powers of certain dia- 

 phragm voltaic combinations, 327 ; 

 new form for the negative element of 

 voltaic arrangement, ib ; test for nitric 

 acid in the sulphuric acid employed in 

 exciting voltaic batteries, 327 ; method 

 of electro- gilding and plating, 328. 



Water battery, experiments with a, 405. 



Waterford haven, elevation of land on 

 the shores of, 318. 



Wave, Fresnel's, on a mode of deducing 

 the equation of, 381. 



Wealden district, on the geological struc- 

 ture of the, 321. 



Weaver (T.) on Irish tin ore, 27. 



Weekes (W. H.), description of a smaller 

 atmospheric electrical apparatus, 246. 



Wire-gauze, micromatic measurement of, 

 1 1 3 ; per centage of incident rays of heat 

 transmitted by, ib. 



Wohler (F.) on the action of high tempe- 

 rature on mellitate of ammonia, 41 ; 

 preparation of formic aether, 334 ; com- 

 position of mellitic acid, 598. 



Woodhouse's (Dr.) " Essay on Single Vi- 

 sion," noticed, 86. 



Wrottesley (Hon. John), catalogue of the 

 right ascensions of fifty-five stars, 242. 



Yorke (Col.) on a specimen of artificial 

 arragonite, 330. 



Zinc, a preserver of copper, 10 ; double 

 cyanurets of, 282 ; malates of, 311. 



Zinc iron circuit, on the intensity of the, 

 106. 



Zoological Society proceedings of the,403. 



Zornlin (Miss) on the periodical shooting 

 stars, 347. 



END OF THE NINETEENTH VOLUME. 



Printed by Richard and 



on Court, Fleet Street. 



