INDEX II. 



249 



Siemens (C. William), Address as Presi- 

 dent of the Mechanical Section, 200. 



Siliu-ian rocks, the Rev. J. D. La Touche 

 on spheroidal structure in, 95. 



Sind, Sir Bartle Frere on the Runn of 

 Cutch and the coimtries between Raj- 

 pootana and, 163. 



Sleep, Dr. Kidd on the physiology of, 

 and of chloroform anaesthesia, 125. 



*" Slickensides," W. Carruthers on, 86. 



Smith (William) on an improved ver- 

 tical anuidar high-pressure steam- 

 boiler, 210. 



Sodium, Dr. Janssen sur une nouvelle 

 methode pom- la recherche de la soude 

 et des composes du, par I'analyse spec- 

 trale, 68. 



Sorby (H. C.) on Jargonia, 75. 



Spectrale, I'analyse, Dr. Janssen sur une 

 nouvelle methode pour la recherche de 

 la soude et des composes du sodium 

 par, 68. 



Spectre de la vapeur d'eau. Dr. Janssen 

 sur le, 07. 



Speed of air in flues and chinmeys, A. 

 E. Fletcher on a new anemometer for 

 measuring the, 48. 



Spence (Peter) on raising a temperature 

 higher than 212° F. in certain solutions 

 by steam of 212° F., 75. 



Spheroidal structure in Silurian rocks, 

 the Rev. J. D. La Touche on, 95. 



*Spirit-levels, chambered, T. Warner on, 

 54. 



Spongy iron, I. Lowthian Bell on the 

 decomposition of carbonic oxide by, 

 62. 



Stafibrdshire, South, coal-fields, John 

 Randall on the Shropshire and, 100. 



Stanford (Edward C. C.) on a chemical 

 method of treating the excreta of 

 towns, 76. 



Stars, British Association Catalogue of, 

 the Rev. R. Main's remarks on the, 

 19. 



'Stars, William Huggins on the heat of, 

 18. 



Steam, Julius Jeffreys on the action upon 

 earthy minerals of water in the form 

 of heated, urged by wood fuel, 92. 



Steam of 212° F., Peter Spence on raising 

 a temperature higher than 212° F. in 

 certain solutions by, 76. 



Steam-boiler, William Smith on an im- 

 proved annular high-pressure, 219. 



Stereoscopic representation of the cubic 

 Eikosi-heptagram, Prof. Sylvester on 

 Prof. Christian Wiener's, 15. 



Stewart (Dr. Balfour) on meteorological 

 reductions; with especial reference to 



the element of vapour, 43 ; on a self- 

 recording rain-gauge, 62. 



'Stirling (J.) on the races of Morocco, 

 151 ; on a visit to the holy city of 

 Fas, in Morocco, 168. 



* Stone implements from Rangoon, Vice- 

 Admiral Sir E. Belcher on, 129. 



Stoney (G. Johnstone) on collimators 

 for adjusting Newtonian telescopes, 

 52 ; on a cheap form of heliostat, 53. 



* on the numerical relations between 



thewave-lengths of the hydrogenrays, 



'Strange (Lieut.-Colonel A.) on the 

 best forms of uimierical figures for 

 scientific instruments, and a proposed 

 mode of engraving them, 63 ; on a 

 small altazimutli instrument for the 

 use of explorers, 168. 



'Strutt (the Hon. J. W.) on an electro- 

 magnetic experiment, 46. 



Sti/lonurus in the cornstone of Hereford, 

 H. Woodward on the occurrence of, 

 103. 



Successive involutes of a circle, Prof. 

 Sylvester on the, 15. 



'Suez Canal, Captain C. Dodd on a re- 

 cent visit to the, 160. 



Sugar, inverted, the Rev. Professor Jel- 

 lett on a method of determining with 

 accuracy theratio of the rotating power 

 of cane-sugar and, 69. 



Surfaces of the second degi-ee, F. W. 

 Newman on the curvature of, 13. 



Sylvester (Prof J. J.), Address as Pre- 

 sident of the Mathematical and Phy- 

 sical Section, 1. 



on Professor Christian Wiener's 



stereoscopicrepresentation of the cubic 

 Eikosi-heptagram, 15 ; on the succes- 

 sive involutes to a circle, 15.' 



Symons (G. J.) and Rogers Field on the 

 determination of the real amoimt of 

 evaporation from the sm-face of water, 

 25,220. 



Tait (Prof. P. G.) on comets, 21. 



Tait (P. M.) on the population and mor- 

 tality of Bombay, 199. 



Tasmanians, James IBonwick on the origin 

 of the, geologicall}' considered, 129. 



Tate (Ralph) on the land and freshwater 

 mollusca of Nicaragua, 117. 



* , notes on an inscribed rock, 151. 



Taxation on real property, F. Purdy on 

 the pressure of, 199. 



'Taylor (J. E.) on certain phenomena in 

 the Drift near Norwich, 100 : on the 

 water-bearing strata in the neighbour- 

 hood of Norwich, 100, 



