758 
THOMPSON (Prof. 8. P.) on practical elec- 
trical standards, 73. 
—— Addressto the Engineering Section, 
608. 
THomson (Prof. J. J.) on practical 
electrical standards, 73. 
Three bodies, the restricted problem of, 
on aremarkable periodic solution of, 
by Dr. W. de Sitter, 446. 
Three-dimensional sections of regular 
hypersolids in space of four dimensions, 
models of, Mrs. A. B. Stott on, 460. 
THWAITES (R. E.), conditions of science 
work in secondary schools, 720. 
TIDDEMAN (R. H.) on the erratic blocks | 
of the British Isles, 329. 
Tims (Dr. W. H. M.) on the effect of the 
sera and antisera on the development 
of the seaual cells, 350. 
TocHER (J. F.) on anthropometric inves- 
tigation in the British Isles, 354. 
TorDAY (H.) and T. A. JOYCE on the 
ethnology of the South-west Congo 
Free State, 642. 
Totemism, on the origin of, by G. L. 
Gomme, 643. 
Tracheids of ferns, the so-called, the real 
nature of, by D. T. Gwynne Vaughan, 
690. 
Trade education, problems of, considered 
in relation to our school system, by 
C. T. Millis, 723. 
}Tramway rails, corrugation of, the origin 
and production of, by W. W. Beaumont, 
624. 
Transvaal, the fossil flora of the, report 
on, 345. 
Trias (Keuper only) in Leicestershire, the, 
the flora and fauna of, by A. R. Hor- 
wood, 306. 
bibliography of works referring to, 
by A. R. Horwood, 311. 
Trias of the British Isles, fifth report 
on the fuuna and flora of the, 298. 
— footprints from the, report on: 
Part V., by H. C. Beasley, 300. 
Trilobite fauna of the Shineton shales, the, 
by F. Raw, 511. 
*Triphenylmethyl, by Prof. Tschitschi- 
babin, 485. 
Trouton (Prof. F. T.), an electrical ex- 
periment for illustrating the two modes 
of condensation of moisture on solid 
surfaces, 453. 
Trusts, economic theory and the forma- 
tion of, by H. W. Macrosty, 606. 
the development of, by D. H. Mac- 
gregor, 607. 
*TSCHITSCHIBABIN (Prof.), 
methyl, 485. 
TUCKER (W. T.) on the erratic blocks of 
the British Isles, 329. 
TucKEY (C. O.), the teaching of the 
elements of analysis, 459. 
triphenyl- 
INDEX. 
Tuning in wireless telegraphy, by Sir 
Oliver Lodge, 620. 
TURNER (Prof. H. H.) on seismological 
investigations, 83. 
on a method of improving the con- 
stants of the plates for the astro- 
graphic catalogue, 465. 
on the determination of periodicity 
from a broken series of maxima, 
466. 
TWEDDELL (T.), the co-operative organi- 
sation of consumers, 606. 
TWELVETREES (W. N.), some new uses 
for reinforced concrete, 624 
Ulu Plus, Perak, the wild tribes of the, 
by F. W. Knocker, 641. 
Upper Keuper of Leicestershire, the origin 
* of the, by T. O. Bosworth, 505. 
Usener’s theories concerning Sonder- 
Gotter and Augenblick-Goétter in his 
*Goétternamen, by Dr. L. R. Farnell, 
638. 
UssHER (W. A. E.) on the fauna and 
flora of the Trias of the British Isles, 
298. 
Valency, discussion on, 480. 
*Variability in the products resulting 
from changes in radium emanation, 
Sir W. Ramsay on, 440. 
VAUGHAN (Dr. A.) on researches on the 
Saunal succession in the carboniferous 
limestone of the south-west of England, 
313. 
— on life-zones in the British car- 
boniferous rocks, 316. 
VAUGHAN (D. T. Gwynne), the real 
nature of the so-called tracheids of 
ferns, 690. 
VESIAN (J. S. E. de), ferro-conecrete and 
examples of construction, 623. 
Viking period, some objects recently 
found in York attributable to the, by 
Dr. G. A. Auden, 646. 
Vincent (Prof. Swale) on the ductless 
glands, 400. 
Vines (Prof. 8. H.) on the occupation 
of a table at the marine laboratory, 
Plymouth, 346. 
Volcanoes, the ancient, of Basutoland, 
Rey. S. 8. Dornan on, 517. 
WAGER (Harold) on ewperimental studies 
in the physiology of heredity, 410. 
WALLER (Dr. A. D.), Address to the 
Physiological Section, 658. 
WALLIS (E. White) on the conditions of 
health essential to the carrying on of 
the mork of instruction in schools, 
421, 
