552 
Contaminated magmas of Aberdeenshire, 
by H. H. Read, *420. 
Convergence in shell-sculpture in Vivi- 
paride, by Dr. N. Annandale, 426, 
465 (D 25). 
Cook (Prof. G.), Distribution of stress in a 
flanged pipe, 299. 
Corresponding Societies Committee Report, 
487. 
CortrEe (Rev. A. L.), Magnetic storms of 
present solar cycle, 416, +464 (A 29). 
Cost of education, by D. M. Cowan, 456. 
Cost-of-living sliding scales, by Miss G. 
Jebb, 431. 
Cowan (D. M.), Cost of education, 456. 
CRAGG (Major F. W.), Organ of Berlese in 
Cimex . . ., 426. 
CrANAGE(Dr.), on extra-mural university 
education, 456. 
Credit, currency, finance and _ foreign 
exchanges, Report of committee on, 268. 
Crew (Dr. F. A. E.), Sex-reversal in frogs 
. . -, 420, $465 (D 3). 
Croom (Sir Halliday), on extra-mural 
university education, 456. 
CuLLEN (Rev. J.), Identity 4X = Y? — 
(—1)0-) p 22, 412. 
Curt (A. O.), Traprain Law, 438. 
Cutter (D. Ward), Soil Protozoa, 422, 
7465 (D 10), 
Dairying, Research work in, by Prof. R. H. 
Leitch, *457. 
Dakin (Prof. W. J.), on Abrolhos Islands, 
261. 
Darwin (C. G.), on quantum theory, 473. 
Davies (Mrs. Fraser), on _ regional 
surveys, 498. 
Death ceremonies... among tribes... 
of Uganda, by Rev. J. Roscoe, 443, 
+466 (H 14). 
Decomposition of simple organic acids 
by ultra-violet radiation, by Prof. F. M. 
Jaeger, 418, 464 (B 7). 
Deflation, by Prof. J. 8. Nicholson, *432. 
Descent, Present position of the theory of, 
in relation to early history of plants, 
by Dr. D. H. Scott, 170. 
Descu (Prof. C. H.), Surface tension in 
solidification of metals, 418, +464, 
(B 12). 
Dicotyledon shoot ..., by Miss E. R. 
Saunders, 453, +466 (K 12). 
Driyes (W. H.), Discontinuity of tem- 
perature at top of troposphere, *411. 
Diptera which cause myiasis ..., by 
Major W. S. Patton, 426. 
Drxey (F.), Magnesian group of igneous 
rocks, 419, +464 (C 9). 
Don (J. )s and J. Gricor, Preference of 
pupils in subjects of study, 454, +467 
(1). 
INDEX. 
Donkin (S. B.), Electricity supply 
station . . ., Edinburgh, 435, +465 
(G 11). 
Doopson (Prof. A. T.), on tides, 217. 
Dovetas (Capt. C. K. M.), Bjerkne’s 
theory of cyclones and anti-cyclones, 
*410. 
Dowttne (J. J.), Recording ultramicro- 
meter, 410, +464 (A 12). 
DreveER (Dr. J.), Appetition and reaction, 
448, 
on instinctive behaviour, 423. 
Drought in England, 1921, by Carle 
Salter, *411, +464 (A 18). 
Droummonp (Dr. J. C.), Vitamines, *446. 
DrumMMOND-FRASER (Sir D.), on inter- 
national credits, 290. 
Dry land and origin of bony vertebrates, 
by Prof. D. M. S. Watson, 421. 
DunKERLEY (G. D.), on charts and 
pictures in schools, 376. 
Dyestuff industry, modern, by Prof. H. E. 
Fierz, 417, +464 (B 3). 
Dyson (Sir F. W.), Results with 72-in. 
reflector in British Columbia, *410. 
Earth, discussion on age of the, 413. 
Economic theory of public expenditure, 
by Miss E. F. Stevenson, 433. 
Economics Section: Address by W. L. 
Hichens, 95. 
Eppryeton (Prof. A. §.), 
theory of relativity, *413. 
EpDRIDGE-GREEN (Dr. F. W.), Change of 
hue caused by addition of white light 
to spectral colours, 447, +466 (I 15). 
Education Section: Address by Sir H. 
Hadow, 187. 
Egg production in poultry, genetics of, 
by Major C. C. Hurst, 460, +467 (M 20). 
Egyptian influence on African death- 
rites, by T. F. McIlwraith, 442. 
Einstein’s theory of relativity, by Prof. 
A. 8. Eddington, *413. 
Electric units, large, by Dr. 8. P. Smith, 
435, +465 (G 13). 
Electrified pith ball in an ionised atmo- 
sphere, Behaviour of, by Dr. Dawson 
Turner and D. M. R. Crombie, 411, 
7464 (A 14). 
Extrott (Dr. W. E.), and A. Cricuron, 
Rickets in pigs, 459, +467 (M 18). 
Exuts (Dr. D.), Iron bacteria in relation 
to incrustation of pipes, 437, 7466 
(G 18). 
Engineering Section : 
A. H. Gibson, 110. 
Engravings on flint-crust from Grime’s 
Graves, ,by L, Armstrong, 439, 1466 
(H5). 
Ensilage, by J. A. Murray, 457, +467 
(M 12). 
Einstein’s 
Address by Prof. 
