INDEX II. 
ttiswoode’s triple combination of 
double-image prisms and quartz plates, 
a form of, a plied to the table polari- 
scope, S. C. Ticley on, 26. 
*Sprague (T. B.), explanations of Mr. 
‘Clintock’s method of finding the 
value of life annuities by means of 
the gamma function, 19; *on the 
causes of insolvency in life-insurance 
companies, and the best means of 
detecting, exposing, and preventing 
it, 211. 
Spring migratory birds of the north of 
England, T. Lister on, 137. 
Statical and kinematical analogues, Prof. 
Everett on, 11. 
Statistics, G. R. Crowe on the compila- 
tion of, illustrated by the Irish census 
returns, 198. 
Stewart (S. A.) on the mosses of the 
north-east of Ireland, 134. 
Stokes (Prof.) on the construction of a 
erfectly achromatic telescope, 26. 
sSioney (G. J.), confirmation of the 
nebular origin of the earth, 22; *on 
the physical units of nature, 22. 
Stow fre. F. W.) on the absorption of 
the sun’s heat-rays by the vapour of 
the atmosphere, 39. 
Strange (Lieut.-Col. A.) on the neces- 
sity for placing physical meteorology 
on a rational basis, 40. 
Strikes, W. H. Dodd on the economic 
law of, 201. 
and lock-outs, F. P. Fellows on 
203. 
*Sulphur-urea, notes on the preparation 
of, by Prof. E. Reynolds, 66. 
‘ , Prof. E. Reynolds on the action 
of.the, in metallic solutions, 66. 
Sun-spots and atmospheric ozone, T. 
Moffat on the apparent connexion be- 
tween, 37, 
Survey of Palestine, Lieut. R. Conder 
on the, 178. 
Surveys in Ireland, a communication 
te the Ordnance Department on, 
84, 
*Sylvester (Prof.), Prof. Clifford on a 
message from, 10. 
Symons (G. J.) on the relative sensi- 
tiveness of thermometers differing in 
size, shape, or materials, 41; on a 
new foim of rain-gauge, 41. 
—— (W.) on a new method of con- 
structing carbon-cells and plates for 
galvanic batteries, 31; on a new me- 
thod for the electrochemical decom- 
ieee of oils and other non-con- 
ucting liquids, 31; on a cheap and 
249 
convenient galvanic battery adaptid 
for weak but continuous curents, 
Table polariscope, 8. C. Tisley on a 
form of Spottiswoode’s triple com- 
bination of double-image prisms and 
quartz plates applied to the, 26. 
Tea and tea-soils from Cachar, Prof. 
Hodges on the composition of, 60. 
Technical education of those interested 
in land, a scheme for the, by the Rey. 
W. W. Wood, 211. 
Telescope, Prof. Stokes on the con- 
struction of a perfectly achromatic, 
26, 
Thermometer, Negretti and Zambra’s 
atent recording and deep-sea, H. 
egretti on, 43. 
Thermometers differing in size, shape, 
or material, G. J. Symons on the re- 
lative sensitiveness of, 41. 
*Thomson (Prof. J.) on the jointed 
prismatic structure of the Giant’s 
Causeway, 93; Address by, to the 
Mechanical Section, 212. 
~ (Sir W.) on the effect on the 
compass of the rolling of ships, 32 ; 
*on improvements in the mariner’s 
compass, 231, 
- (W.) on the decomposition of eggs, 
43, 
*Thorpe (Prof.) on the specific volumes 
of certain liquids, 67. 
Tisley (S. C.) 01 a form of Spottis- 
woode’s triple combination of double- 
image prisms and quartz plates ap- 
plied to the table polariscope, 26; on 
a new and simple form of adjustable 
slit for the spectroscope, 27; on a 
four-pendulum apparatus, 44. 
ss (J.) on the potato-disease, 
34, 
Traill (W. A.) on geological sections in 
the co. Down, 93. 
Transit of Venus, Capt. Abney on pho- 
tographic operations connected with 
the, 19. 
“Travels beyond three Seas, by Athana- 
sius Nitikin, Merchant of Tver, 14€6- 
1472,” E. D. Morgan on, 177. 
*Tree-ferns, Dr. Moore on the growth of 
the stems of, 134. : 
Tribe (A.) and Prof. Gladstone, electro- 
lytic experiments on some metallic 
chlorides, 58. 
Trompe or blowing-engine for giving a 
supply of coal-gas under pressure for 
sensitive flames, description of a, by 
F, H. Marshall, 42, 
18 
