576 



INDEX. 



Sibson (F.) on tbe mecbanism of respira- 

 tion, 48 ; on tbe blow -bole of the por- 

 poise, 50. 



Silicic acid, on tbe specific gravity of,416. 



Silver, on tbe easy reduction of the chlo- 

 ride of, 556. 



Smedt (M. de) on the purification of zinc, 

 568. 



Solar halos, on some remarkable, 440. 



Solids, elastic, on tbe equilibrium and 

 motion of, 60. 



Spectrum, prismatic, on tbe bands formed 

 by the partial interception of tbe, 337, 

 474. 



St. Andrews on a remarkable proposition 

 relative to polyhedrons, 442. 



Steatite, analysis of, 555. 



Stokes (G. G.) on the aberration of light, 

 6, 62 ; on the theories of the internal 

 friction of fluids in motion, and of tbe 

 equilibrium and motion of elastic bo- 

 dies, 60. 



Strickland (H. E.) on the satellitary na- 

 ture of shooting stars and aerolites, 1 ; 

 on the use of the word homology in 

 comparative anatomy, 35. 



Struvite, crystalline form and composi- 

 tion of, 125. 



Sulphur, excretion of, by the kidneys, in 

 an unoxidized state, 406. 



Sulphurous aether, notice respecting, 146. 



Sun, ancient eclipses of the, 229. 



Talc, analysis of, 555. 



Temperature, on the law of daily, 341. 



Tendons, anatomy and physiology of the 

 sheaths of, 130. 



Tonka beans, examination of, 483. 



Tungstic acid, method of estimating, 333. 



Ulex (G. L.) on struvite, a new mineral, 

 124. 



Unger (M.) on xanthic oxide, 419. 



Uranus, history of the discovery of the 

 planet exterior to, 511. 



Urine, on the variations of tbe alkaline 

 and earthy phosphates in diseased^ ; 

 on the extractive material of the, 406. 



Uterus, on tbe nervous system of tbe, 129 . 



Valerianate of zinc, preparation of, 422. 



Van Breda (M.) on the luminous phamo- 

 mena of the voltaic battery, 538. 



Varechs, on the origin of the iodine con- 

 tained in, 238. 



Vegetation, influence of nitrous oxide on, 

 332. 



Vogel (M., jun.) on the influence of ni- 

 trous oxide gas on vegetation, 332. 



Voice, on the physiology of the human, 

 132. 



Voltaic battery, on tbe luminous phaeno- 

 mena of the, 538. 



Waller(Dr. A.), observations on hail, 103; 

 on some tissues of the' animal frame, 

 271 ; on the origin of mucus and pus- 

 globules, 397. 



Warner (H. S.) on conjugate points, 83 ; 

 on the connexion of the circle and hy- 

 perbola, 88. 



Wartmann (Prof. E.) on two extraordi- 

 nary meteors, 176. 



Water, on the discovery of the composi- 

 tion of, 36. 



Waterson (J. J.) on the physics of media 

 that are composed of free and perfectly 

 elastic molecules in a state of motion, 

 50. 



Weddle (T.) on a new analytical demon- 

 stration of the parallelogram of forces, 

 223. 



Williamson (A. W.) on the blue com- 

 pounds of cyanogen and iron, 156. 



Wohler, Prof, on cryptolite, 31 ; on the 

 preparation of pure hydrocyanic acid, 

 566. 



Xanthic oxide, observations on, 419. 

 Yest, observations on, 334. 

 Young (J. R.) on certain criteria of ima- 

 ginary roots of equations, 32 ; on Mr. 

 Warner's paper on conjugate points, 

 175. 

 Zinc, on the purification of, 568. 

 Zoological Society, proceedings of the, 

 233. 



END OF THE TWENTY-NINTH VOLUME. 



PRINTED BY RICHARD AND JOHN E. TAYLOR, 

 red Lion court, fleet street. 



