276 



REPOKT 1875. 



Screw-complex of tlie seooud order, 

 Prof. R. S. Ball on a, 10. 



*Sea-bottom of the North Pacific, Dr. 

 W. B. Carpenter on tlie condition of 

 the, as .shown by the soundings recent- 

 ly' taken by the U.S. steamship ' Tiis- 

 carora,' 64. 



Sedimentary rocks, Prof. T. M^K. 

 Hughes on the classification of the, 70. 



Separation of lead, silver, and mercury, 

 T. Fairley on the, 42. 



*Sericiculture, Mons. Bonhomme on, 

 208. 



'Severn, the tidal scour in the, 0. 

 liichardson on, 2.50. 



* tunnel, C. Richardson on the, 2-50. 



*Sewage, J. C. Melliss on the treatment 

 of, 4.5. 



*.Sewer-trap, H. Masters on a, 2jO. 



Shadows of plane curves on spheres, 

 II. M. Jeffery on, W. 



*Sharpness Docks, W. B. Clegram on, 

 24.5. 



Shoolbred (J. N. ) on tides in the Irish 

 Sea, 2-50. 



'Signals, W. Smith on a means of re- 

 cording the movements of points and, 

 252. 



, audible, for railways, Messrs. 



Crichton and Craig on a system of, 24-5. 



*Silkworm, Mrs. B. Neill on the accli- 

 matization of the, 218. 



Silurian series of the North of England, : 

 Prof. H. A. Nicholson and C. Lap- 

 worth on the central group of the, 78. 



*Simms (Dr.) on the physiognomy of 

 the ear, 178. 



'Singular solutions, Prof. IT. .1. S. Smith 

 on, 21. 



of differential equations of the 



first order which represent lines at 

 infinity, Prof. P. Mansion on the, 19. 



Skin, some new researches on the ana- 

 tomy of the, Dr. Martyn on, 109. 



*Smith (Prof. II. .1. S.) on singular 

 solutions, 21 ; *on the eflect of qua- 

 dric transformation on the singular 

 points of a curve, 21 ; *on continued 

 fractious, 21. 



* (W.) on A. S. Ilallidie's wire 



rope traction-railway, 252 ; *on a 

 means of recording the movements of 

 points and signals, 252 ; *ou a breech- 

 loading mountain gun, 252 ; * on a 

 military bidon, 252. 



Sociology, anthropology, and nationality, 

 D. Mackintosh on, 17G. 



'Solution of difriculth'solublo substances, 

 A. H. Allen on a method of effecting 

 the, 37. 



'Solvents, new, for gold, silver, plati- 

 num, &c., T. Fairley on, with an ex- 

 planation of the so-called catalytic 

 action of these metals and their salts 

 on hydrogen dionide, 42. 



South-African diamonds. Prof. J. Teu- 

 nant on the, 82. 



torrential floods. Dr. J. C. Brown 



on, 190. 



South-Sea Islanders, Rev. W. W. Gill 

 on the origin of the, 17.3. 



'Spalding (D. A.) on instinct and ac- 

 quisition, 16.3 ; *on free trade in labour, 

 220. 



* Spiranthes Romanzoviana, Dr. D. Moove 

 on, 158. 



'Stamp (Miss) on statistics of free pub- 

 lic libraries, 220. 



Standard of national education, Mrs. 

 W. Grey on the, 21.3. 



'Statistics of free public libraries. Miss 

 Stamp on, 220. 



Steel, the effect of heat in altering the 

 molecular structure of, Prof. W. F. 

 Barrett on, 259. 



' gradient formation, H. Handyside 



on a, 248. 



* -wires and rods, the effects of heat 



on the molecular .structure of, Prof. 

 W. F. Barrett on, 27. 



Steering, Dr. Woolley on, 255. 



Stewart (Prof. B.), Address by, to the 

 ISIathematical and Physical Section, 1. 



Stileman (F. C.) on Portishead Dock, 

 252. 



Stoddart (W. W.) on auriferous lime- 

 stone at Walton, 81. 



Stokes (Prof.) and J. Ilopkinson on the 

 optical properties of a titano-silicic 

 glass, 26. 



Stone implement. Dr. J. II. Gladstone 

 on the recent discovery of a, in the 

 brick-earth of Erith, ] 75. 



Strachey (Lieut.-Gen. R.), Address by, 

 to the Geographical Section, 180. 



'Stroudley and Rusbridge (Messrs.) on 

 communication between passengers 

 and guards, 252. 



Submerged forest in the estuary of the 

 Orwell, discovery of a, by J. E. Taylor, 

 82. 



Sugar, some account of the manufacture 

 and refining of, in Bristol, 1875, by 

 H. T. Chamberlain, 39. 



trade in Bristol, 1875, H. Cham- 

 berlain on the rise and progress of 

 the, 209. 



*Sim-spot period. Prof. W. S. .Tovons 

 on the influence of the, upon the price 

 of corn, 217- 



