INDEX. 



513 



Thornton (Prof. W. M. ), the thermal 



conductivity of solid insulators, 274. 

 Three-electrode thermionic valve, the, 



as an alternating current generator, 



by Prof. C. L. Fortescue, 270. 

 TIZ.A.BD (H. T.), the variation of engine 



power with height, 267. 

 TowLER (Col.), some of the conditions 



governing the selection of an aerial 



route, 230. 

 fTransport policy, by W. M. Acworth, 



248. 

 ♦Travers (Dr. M. W.), glass manufacture 



at the end of the war, 168. 

 Triode valves, a method of using two 



in parallel for generating oscillations, 



by Prof. W. H. Eccles and F. W. 



Jordan, 270. 

 Tubular struts, the strength of, by Prof. 



A.Robertson, 466. 

 Turbines, geared, the development of, 



for the propulsion of ships, by R. J. 



Walker, 264. 

 Turkey, the future of, by H. Charles 



Woods, 223. 

 Turner (Prof. H. H.) on seismologtcal 



investigations, 35. 

 — — on radiotelegraphic investigations, 



40. 



on geophysical discussions, 81. 



on the determination of gravity 



at sea, 83. 

 on the establishment of a .wlar 



observatory in Australia, 96. 

 on the work of the Corresponding 



Societies Comm,ittee, 442. 



Unemployment in Eastern Canada, by 

 G. E. Jackson, 254. 



♦Valencies, negative and positive, the 



conjugation of, by Prof. R. Robinson, 



171. 

 Van der Pol (Dr. B.) on the difiraction 



of electric waves, 152. 

 . Vernon (Dr. H. M.), the influence of 

 P the six-hour day on industrial efficiency 



and fatigue, 308. 

 Viscosities of liquids at high pressures, 



the determination of, by Dr. T. E. 



Stanton, 158. 

 Vision, a possible theory of. Sir Oliver 



Lodge on, 152. 



Wade (Hon. Sir C. G.), price-fixing, with 

 special reference to Australian experi- 

 ence, 246. 



Walker (Dr. G. T.) on seismological 

 investigations, 35. 



Walker (Dr. G. W.), seismology after 



the war, 32. 



on seismological investigations, 35. 



on geophysical discussions, 81. 



Walker (R. J.), development of geared 



turbines for the propulsion of ships, 



264. 

 Waller (Dr. A. D.), the measurement of 



emotion, 307. 

 measurement of the energy output 



of "heavy workers " (dock labourers), 



310. 

 Walton (Sir Joseph) on fuel economy, 



97. 

 *War, matters relating to the, or recon- 

 struction after the war, report on, 



341. 

 *War-time food production in England 



and Wales, by Sir T. H. Middleton, 



381. 

 Water catchment areas, the afforestation 



of, by Prof. Augustine Henry, 337. 

 Watson (Arnold T.) on the building 



habits of the polychsete worm. Pectin- 

 aria Koreni, Mgr., 210. 

 Watson (Dr. D. M. S.) on the excavation 



of critical sections in the old red sand- 

 stone of Rhynie, Aberdeenshire, 110. 

 * palaeontology and the evolution 



theory, 211. 

 Watson (Prof. G. N.) on the calculation 



of mathematical tables, 43. 

 the diffraction of electric waves, 



152. 

 Watts (Prof. W. W.) on fuel economy, 



97. 

 on the collection of photographs 



of geological interest. 111. 

 Wave motion, report on, by Sir G. Greenhill, 



403. 

 Webb (W. Mark) on the work of the 



Corresponding Societies Committee, 422. 

 Webster (Prof. A. G.) on the calculation 



of mathematical tables, 43. 

 Weiss (Prof. P. E.) on the character, 



work, and maintenance of museums, 



125. 

 Welch (H.) on the collection of photo- 

 graphs of geological interest, 111. 

 West (R. RoUeston), the problem of 



steep landing and short run b}- wind 



tunnel investigation, 268. 

 Westminster, the ^i1^ of, by H. Rodwell 



Jones, 229. 

 Whiddington (Dr. R.), a wireless method 



of measuring e/m, 149. 

 Whitaker (W.) on the collection of 



photographs of geological interest, HI 

 on the work of the Corresponding 



Societies Committee, 422. 

 White (Dr. Jessie) on the character, 



work, and maintenance of museums, 



125. 



