630 



INDEX. 



Whittaker, J. M., Composition of linear 

 differential systems, 343, 567. 



WiJK, Dr. A. VAN, Isolation of crystal- 

 line antirachitic reaction-product from 

 irradiated ergo-sterol, 364, 567. 



Wilkinson, Dr. D. G., Chemistry of 

 vitamin D, 364*, 567. 



Williams, Dr. C. B., Trinidad sugar-cane 

 froghopper, 403. 



Williams, Dr. S., Milk and products, 

 517*, 572. 



Williamson, Mrs. H. S., Sex in ascobolus 

 magnificus, 482. 



Wilson, D. R., Physiology and psychology 

 of work, 428*, 568. 



Wilson, Prof. E., Origin of iron in 

 London atmosphere corrosion products, 

 433, 569. 



Wilson, Sk H., Management problems, 

 British position, 420*, 568. 



WiMPBRis, H. E., High-speed flying, 

 xxvi*, 565*. 



WiNDAUS, Prof. A., Chemistry of vitamin 

 D, 363, 567. 



Wind tunnel at National Physical 

 Laboratory, by E. F. Relf, 434, 

 569. 



Wind tunnels of Royal Aircraft Establish- 

 ment, by R. McK. Wood, 434, 569. 



Wireless communication, retrospect, by 

 Sir 0. Lodge, xxv*, 552. 



WiSHART, Dr. J., Interpolation without 

 differences, 349, 567. 



WiTHYCOMBE, Capt. J. G., Ordnance 

 Survey, 412. 



WoLTERS, A. W., Conceptual thinking, 

 471. 



Wood, Dr. A., Planning of buildings for 

 good acoustics, xxvi*. 



Wood, R. McK., Wind tunnels of Royal 

 Aircraft Establishment, 434, 569. 



Wood, Prof. R. W., Recent investiga- 

 tions in optics, 332. 



WooDGBB, J. H., Germ layer formation 



in birds, 397*, 567. 

 Wood preservation, discussion by R. S. 



Pearson, K. St. G. Cartwright, Dr. 



R. C. Fisher, J. Bryan, W. G. CampbeU, 



493, 571. 

 Woodward, Sir A. S., Geology for local 



societies, 530. 

 Wool, by Dr. S. G. Barker, 517, 572. 

 WooLLABD, Prof. H. H., Physiological 



basis of sensation, 458*. 

 WooLDRiDGE, Dr. S. W., Geology of 



London district, 367. 

 Geomorphology of London basin, 



411. 

 WooLLEY, Dr. R. v.d. R., Intensities of 



lines in solar and stellar spectra, 355, 



567. 

 Work, discussion on physiology and 



psychology of, by Sir D. Munro, T. C. 



Angus, E. Atzler, Prof. E. P. Cathcart, 



R. Bonnardel, H. Laugier, Dr. C. S. 



Myers, Dr. H. M. Vernon, D. R. Wilson, 



428, 568. 

 Wright, E. M., Asymptotic partition 



formulae, 344, 567. 

 Wyatt, S., Personal factors in industrial 



efficiency, 476*. 

 Wyndham, Hon. H. A., Education of 



backward peoples, 505. 



Yield point, upper and lower, in steel 

 exposed to non- uniform stress, by 

 Prof. G. Cook, 440*, 568. 



Yorkshire, effect of urban expansion on 

 flora and fauna, by T. Sheppard, 537. 



Zeeman, Prof. P., Ionised noble-gas 



spectra, 332. 

 ' Zoos ' and national parks, by Sir P. C. 



Mitchell, XXV*, 543. 



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