630 
WHITTAKER, J. M., Composition of linear 
differential systems, 343, 567. 
Wisk, Dr. A. van, Isolation of crystal- 
line antirachitic reaction-product from 
irradiated ergo-sterol, 364, 567. 
Wizinson, Dr. D. G., Chemistry of 
vitamin D, 364*, 567. 
Wuutams, Dr. C. B., Trinidad sugar-cane 
froghopper, 403. 
Wits, Dr. §., Milk and products, 
517*, 572. 
Wuiuuiamson, Mrs. H. S8., Sex in ascobolus 
magnificus, 482. 
Wison, D. R., Physiology and psychology 
of work, 428*, 568. 
Witson, Prof. E., Origin of iron in 
London atmosphere corrosion products, 
433, 569. 
Wuson, Sir H., Management problems, 
British position, 420*, 568. 
Wimeeris, H. E., High-speed flying, 
xxvi*, 565*. 
Winpats, 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 O. Lodge, xxv*, 552. 
Wisnart, Dr. J., Interpolation without 
differences, 349, 567. 
Wirnycomsr, Capt. J. G., Ordnance 
Survey, 412. 
Wo ttrrs, A. W., Conceptual thinking, 
471. 
Woop, Dr. A., Planning of buildings for 
good acoustics, xxvi*. 
Woop, R. McK., Wind tunnels of Royal 
Aircraft Establishment, 434, 569. 
Woop, Prof. R. W., Recent investiga- 
tions in optics, 332. 
{ 29 FEBS2 
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\e 
Se! 
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NAT US 
INDEX. 
Wooneerr, 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. Campbell, 
493, 571. 
WoopwarpD, Sir A. S., Geology for local 
societies, 530. 
Wool, by Dr. S. G. Barker, 517, 572. 
WoottarD, Prof. H. H., Physiological 
basis of sensation, 458*. 
WootpripgGr, Dr. 8. W., Geology of 
London district, 367. 
Geomorphology of London basin, 
411. : 
Woottey, 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. 8. 
Myers, Dr. H. M. Vernon, D. R. Wilson, 
428, 568. 
Wricut, E. M., Asymptotic partition 
formule, 344, 567. 
Wyatt, §., Personal factors in industrial 
efficiency, 476*. 
WynpuHam, 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., 
spectra, 332. 
‘Zoos’ and national parks, by Sir P. C. 
Mitchell, xxv*, 543. 
Ionised noble-gas: 
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SPOTTISWOODE, BALLANTYNE & Co. LTD. 
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