1002 
the present aspect of the jade ques- 
tion, 971. 
Russell (Dr. W. J.) on the action of light 
on the hydracids of the halogens in pre- 
sence of oxygen, 263; on the present 
methods of teaching chemistry, 265. 
Saline inclusions in the crystalline rocks 
of Dartmoor, the origin of the, A. R. 
Hunt on, 815. 
*Sandwich Islands, the ornithology of 
the, Prof. A. Newton on, 852. 
Schlichter (Dr.), some points in connec- 
tion with Ptolemaic geography and 
Ptolemaic maps, 897. 
Schuster (Prof.) on standards for use in 
electrical measurements, 95°; on elec- 
trolysis in its physical and chemical 
bearings, 138; on the best methods of 
recording the direct intensity of solar 
radiation, 144; on the best means of 
comparing and reducing magnetic 
observations, 172; on the preparation 
of a new series of wave-length tables 
of the spectra of the elements and 
compounds, 224. 
Science, the teaching of, in elementary 
schools, report on, 489. 
—— , recent legislation as facili- 
tating, Sir H. E. Roscoe on, 772. 
Sclater (Dr. P. L.) on the present state 
of our knowledge of the zoology and 
botany of the West India Islands, and 
cn the steps taken to investigate as- 
certained deficiencies in the fauna and 
flora, 447 ; on the occupation of a table 
at the zoological station at Naples, 449. 
Sea-beach, an ancient, near Bridlington 
Quay, final report on, 375. 
Seasonal variations of temperature in 
lakes, rivers, and estuaries in various 
parts of the United Kingdom, third 
report of the Committee for arranging 
an investigation of the, in co-operation 
with the local societies represented on 
the Association, 92. 
Seaweeds, brown and red, observations 
on, by Prof. T. Johnson, 868. 
Secondary cells, by W. J. S. B. Starkey, 
958. 
Secreting cells, Prof. G. Gilson on, 861. 
Sedgwick (A.) on the occupation of a 
table at the zoological station at 
Naples, 449. 
Seeley (Prof. H. G.) on the neural arch 
of the vertebra in the ichthyosauria, 
809. 
Semipermeable membranes, the action 
of, in electrolysis, Prof. W. Ostwald on, 
746. 
, the electrical behaviour of, Prof. 
Ostwald on, 331. 
* Serve’ tube, W. B. Marshall on the, 950. 
INDEX. 
Sharp (Dr.) on the present state of our 
knowledge of the zoology and botany 
of the West India Islands, and on the 
steps taken to investigate ascertained 
deficiencies in the fauna and flora, 447. 
Sharp (W.), experiments with drugs as a 
question of science, 859. 
Shaw (W. N.) on standards for use in 
electrical measurements, 95; on elec- 
trolysis in its physical and: chemical 
bearings, 138; on the present state of 
our knowledge in electrolysis and elec- 
tro-chemistry, 185; on the theory of 
solution, 336; on the general theory 
of ventilation, with some applications, 
730. 
Shelford (W.) on the investigation of the 
action of waves and currents on the 
beds and foreshores of estuaries by 
means of working models, 512. 
Shenstone (W. A.) on the present 
methods of teaching chemistry, 265 ; 
on the influence of the silent discharge 
of electricity on oxygen and other 
gases, 338; *on some new vacuum 
joints and taps, 729. 
Sibley (Dr. W.) on the incubation of 
snakes’ eggs, 860. 
Sidgwick (Prof. H.) on the best methods 
of ascertaining and measuring varia- 
tions in the value of the monetary 
standard, 485; on the statistical data 
available for determining the amount 
of the precious metals in use as money, 
&e., 498. 
Silicon, the influence of, on the properties 
of iron and steel, fourth report on, 262. 
Silurian in North-east Montgomeryshire, 
the strata forming the base of the, 
J. B. Morgan on, 816. 
Simplex brake, the, by W. B. Marshall, 
950. 
*Simultaneous linear differential equa- 
tions, A. R. Forsyth on systems of, 745, 
Size of drops, account of experiments to 
determine the variations in, with the 
interval between the fall of each, by 
W. Binnie, 731. 
*Skagerack, the gases held in solution 
by the sea-water of the, recent inves- 
tigations on, by Dr. O. Pettersson, 779. 
*Skaptor district of. Iceland, on a visit 
to the, by Drs. T. Anderson and H. J. 
Johnston-Lavis, 897. 
Sladen (P.) on the occupation of a table 
at the zoological station at Naples, 449. 
Sluices for rivers, &c., the construction 
of, F. G. M. Stoney on, 954. 
Smith (H. Ll.), modern changes in the 
mobility of labour, 927. 
Smith (Dr. Wilberforce), stethographic 
tracings of male and female respiratory 
movements, 981 ; diagrams for reading- 
off indices, 982, 
i 
