GENERAL INDEX. 
425 
Thornton (W. T.) on the income-tax, 
1862, 175 
Thorny plants, the origin of, Prof. P. 
Geddes on, 1890, 870 
Thornycroft (J. I.) on vertical motion 
of vessels, 1875, 252 
- on shallow-draft screw steamers 
for the Nile expedition, 1885, 1193 
Thorold (W.) on the failure of the sluice 
in fens, and on the means of preventing 
such sluices against a similar contin¬ 
gency, 1862, 186 
-on an auxiliary railway for turnpike 
roads and highways passing through 
towns, 1868, 195 
Thorpe (Dr. T. E.), contributions to the 
history of the phosphorus chlorides, 
1871, 81 
-on an improved form of filter pump, 
1872, 83 
- on isomeric cresols ancl their deri¬ 
vatives , 1874, 73 ; 1875, 112 
* -on the specific volumes of certain 
liquids, 1874, 67 
- on the specific volumes of liquids, 
1875, 62 
* -on a new gaseous compound of 
fluorine and phosphorus, 1875, 45 
-- on the chemical action between 
solids, 1881, 580 ; on the action of zinc 
and magnesium on acidified solutions 
of ferric sulphate, 595 ; *011 vapour 
density determinations, 597 
- on the methods employed in the 
calibration of mercurial thermometers, 
1882, 145 
* - Address to the Chemical Section, 
1890, 761 ; *on phosphorus oxide, 
780 
-and J. Dalzell on the existence 
of sulphur dichloride, 1871, 68 
- and Prof. A. W. Pucker on the 
calibration of mercurial thermometers 
by Bessel’s method, 1881, 540 
-on the third magnetic survey 
of Scotland, 1885, 926 
* -on the relations between the 
geological constitution and the mag¬ 
netic state of the British Isles, 1889, 
586 
* - —— on regional magnetic dis¬ 
turbances in the United Kingdom, 
1890, 751 
Thouar (M. A.), from Paraguay to the 
Pacific, 1890, 893 
Thought, Boole’s laws of, R. L. Ellis on, 
1870, 12 
-Rev. R. Harley on, 1870, 14 
-in vertebrate animals in connection 
with the development of their brain, 
J. Byrne on the development of the 
powers of, 1874, 138 
Three-cornered, or four-cornered consti¬ 
tuencies, R. B. Hayward on the 
chances of success or failure of candi¬ 
dates for, 1868, 9 
Thrift as an element of national strength, 
G. C. T. Bartley on, 1877, 162 
Thrupp (J.) on the domestication of cer¬ 
tain animals in England between the 
seventh and eleventh centuries, 1865, 
94 
*Thruston (John) on evaporation from 
rain-gauges, 1867, 28 
Thunder Bay, Prof. H. A. Nicholson on 
the geology of the, and Shabendowan 
mining-districts on the north shore of 
Lake Superior, 1872, 118 
Thunderstorm of August 6 , 1885, remark¬ 
able occurrence during the, at Al- 
brighton, J. B. Elwell on a, 1885, 924 
Thunderstorms, W. de Fonvielle on the 
advantages of keeping records of 
physical phenomena connected with, 
1872, 55 
- the different kinds of, and on a 
scheme for their systematic observa¬ 
tion, Hon. R. Abercromby on, 1887, 597 
Thurnam (Dr. J.) on obliteration of the 
sutures in one class of ancient British 
skulls, 1864 ,128 
Thurston (Prof. R. H.) on the theory of 
the steam-engine , 1884, 569 
Thwaite (B. H.), on fuel calorimetry, 
1886, 536 
Tliylacinus , Dr. Edwards Crisp on some 
points relating to the visceral anatomy 
of the, 1868, 114 
- the myology of the shoulder and 
upper arm of the, Dr. D. J. Cunning¬ 
ham on, 1877, 107 
fTHYS (Capt.) on the Congo railway, 
1889, 659 
Thysanura , Sir John Lubbock on some 
points in the anatomy of the, 1867, 91 
Tiaret in Algeria, some remarkable monu¬ 
ments in the neighbourhood of, Col. 
Sir L. Playfair on, 1889, 668 
Tibet, Lake Pangong in, Capt. H. H. 
Godwin-Austen on thedistrict of, 1866, 
100 
* Eastern, T. T. Cooper on, 1870, 169 
- the trade routes from Bengal to, 
Lieut.-Col. T. H. Lewin on, 1879, 432 
- Preshevalski’s travels in, E. D. 
Morgan on, 1875, 194 ; *1886, 734 
* -a new route from India to, Capt. 
W. J. Elwes on, 1888, 741 
Tibetan frontier, E. C. Baber on curiosi¬ 
ties of travel on the, 1883, 599 
Tichborne (C. R. C) on dust as a fer¬ 
ment, 1870, 64 
-on the dissociation of molecules by 
heat, 1871, 81 
-on some peculiarities of the Vartry 
water, and on the action of that water 
upon boiler plates, 1878, 517 
Tidal currents, the drifting power of. 
