INDEX. 



951 



Screws, the various small, used in tele- 

 graphic and electrical apparatus, in 

 clockwork, and for other analogous 

 purposes, second report of the Com- 

 mittee for determining a gauge for 

 the manufacture of, 2S7. 

 *Secondary batteries, by VV. H. Preeee, 



893. 

 Sedgwick (A.) on the occupation of a 

 table at the zoological station at 

 Naples, 252. 

 Selwyn (Dr. A. R, C.)on the glacial origin 



of lake basins, 721. 

 *Septic organisms, the behaviour of the 

 germs of, under changes of tempera- 

 ture, a method of studying, Rev. Dr. 

 Dallinger on, 785. 

 Severn tunnel railway, the, l>v J. C. 



Hawkshaw, 881. 

 Shaen (W.) on the teaching of science in 



elementary schools, 283. 

 Shaw (Prof. H. S. H.)on certain practical 

 applications of a new mechanical prin- 

 ciple*, 631. 

 Sheldon (Prof. J. P.), British and Cana- 

 dian agriculture, 847. 

 Shepherd (Prof.) on anatomical varia- 

 tions : (1) par-occipital process occur- 

 ring in man ; (2) secondary astragalus ; 

 (3) persistence of the left duct of 

 Cuvier in man, 779. 

 Shoolbred (J. N.) on reducing and tabu- 

 lating the tidal observations in the 

 English Channel made with the Dover 

 tide-gauge, and connecting them witli 

 observations made on the French 

 coast, 37. 

 Short periods, certain, common to solar 

 and terrestrial meteorological pheno- 

 mena, Prof. Balfour Stewart and W, L. 

 Carpenter on, 634. 

 Silicates, the natural, the chemistry of, 



Prof. T. Sterry Hunt on, 679. 

 Silicious organic remains in the lacustrine 

 deposits of the province of Nova Scotia, 

 Canada, a preliminary examination of 

 the, by A. H. Mackay, 742. 

 Silurian strata in Red River Valley, Mani- 

 toba, gleanings from outcrops of, by 

 J. H. I'anton, 715. 

 *Single-track railways, W. E. Muir on, 



885. 

 •Skull, a, from the Loss of Podbaba, near i 

 Prague, and a skull found in alluvium 

 at Kankakee, Illinois, along with a 

 tooth of the mastodon, Dr. D. Wilson 

 on, 917. 

 Sladen (P.) on the occupation of a table 

 at the zoological station at Naples, 252. 

 Smith (Dr. A. L.) on the ventilation of 



ocean steamships, 895. 

 Smith (Mrs. E. A.), remarks on the cus- 

 toms and language of the Iroquois, i 

 914. j 



♦Smith (H.), electric tramways, 893. 



Smith (V.) on the Canadian Pacific rail- 

 way, 885. 



Smith (W.) on the lighthouse system of 

 Canada, 891. 



Social forces, harmonies and antagonisms 

 in the, by W. H. Douglass, 869. 



*Soda and chlorine, the manufacture of, 

 W. Weldon on, 679. 



Soils, some points in the composition of, 

 Sir J. B. Lawes and Dr. J. H. Gilbert 

 on, with results illustrating the sources 

 of fertility in Manitoba prairie soils, 

 686. 



Solar radiation, report on the best me- 

 thods of recording the direct intensity 

 of, 28. 



progress in 



*Solar spectrum, recent 



photographing, Prof. H. A. Rowland 

 on, 635. 

 Solar system, the invariable plane of the, 



D. P. Todd on, 651. 

 Sollas (Prof. W.J.) on the origin of fresh- 

 water faunas, 760. 

 Solution, a theory of, by W. W. J. Nicol, 

 675. 



, some phenomena of, illustrated by 



the case of sodium sulphate, Prof. W. A. 

 Tilden on, 675. 

 Solutions, the physical constants of, Profs. 

 W. L. Goodwin and D. H. Marshall on, 

 679. 

 Solvable irreducible equations of prime 



degree, Prof. G. P. Young on, 646. 

 Sorby (Dr. H. C.) on fossil polyzoa, 97. 

 Sounding ocean depths, recent improve- 

 ments in apparatus and methods for, 

 by Rear-Adm. D. Ammen, 629. 

 Spectra of the elements, wave-length 

 tables of the, report on the preparation 

 of a new series of, 351. 

 Spectroscopic studies of explosions, by 



Profs. Liveing and Dewar, 672. 

 Spectrum analysis, the present state of 



our knowledge of, report on, 295. 

 Specula of reflecting telescope, polishing 



the, the Earl of Rosse on, 637. 

 Spot spectrum from D to B, Rev. S. J. 



Perry on the, 635. 

 Sprague (T. B.) on the probability that 

 a marriage entered into at any age 

 will be fruitful, and that a marriage 

 which has been childless for several 

 years will subsequently become fruit- 

 ful, 866. 

 Stanley (W. F.) on the improbability of 

 the theory that former glacial periods 

 in the northern hemisphere were due 

 to eccentricity of the earth's orbit, and 

 to its winter perihelion in the north, 

 723. 

 *Stars with ameasurable annual parallax:, 

 a systematic research for, and its re- 

 sults. Prof. It. S. Ball om 654, 



