INDEX. 
Relativity contraction in a fotating 
shaft ..., by Dr. F. E. Hackett, 412. 
Rewnte (Dr. J.), Acarine disease in hive 
bees, 425, 7465 (D 22). 
Rescue apparatus for use in mines, by 
Prof. H. Briggs, 437, +466 (G 23). 
Results with 72-in. reflector in British 
Columbia, by Sir F. W. Dyson, *410. 
Retinal rivalry for test of colour fatigue, 
use of, by J. G. Taylor, 450. 
Rew (Sir H.), Agricultural statistics, 
*459, +467 (M 15). 
Reynotps (Prof. 8. H.). on geological 
photographs, 251. 
Rhynie chert bed, by Prof. W. M. Lang, 
419. 
Riowarpson (Prof. O. W.), Address to 
Section A, 25. 
Rickets in pigs, by Dr. W. E. Elliott and 
A. Crichton, 459, +467 (M18). 
Ripeau (Dr. E. K.), on structure of 
molecules, 472. 
Ripeeway (Sir 
7466 (H 7). 
Rirouiez (Dr. J.), Giant squids. . ., 423. 
Riroutz (Dr. W.), Larve of genus 
Rhagium F. and their economic im- 
portance, 451, +466 (K 3). 
Rivers (Dr. W. H. R.), Instinct of 
acquisition, *449, +466 (J 13). 
Melanesian land-tenure, *442. 
Rosinson (Prof. R.), Genesis of plant 
pigments ..., 417. 
Roscozt (Rev. J.), Death ceremonies 
... among tribes... of Uganda, 443, 
7466 (H 14). 
— Mackie ethnological expedition to 
Uganda, 444, +466 (H17). 
Ross (Miss E. L. G.), Vocational fitness 
among mental defectives, 450. 
Russ=tu (Dr. E. J.), *457, {467 (M 1). 
W.), Totemism, 441, 
SALTER (Carle), The drought in England, 
1921, *411, +464 (A 18). 
Sampson (Prof. R. A.), Microchrono- 
graph, 415. 
Sapyga 5-punctata, 
Browne, 425. 
SaunpeErs (Miss E. R.), . . . Dicotyledon 
shoot, 453, +466. (K 12). 
Science and citizenship, discussion on, 
497. 
Science and crop production, by Dr. E. 
J. Russell, *457, +467 (M1). 
Science and Ethics, by Dr. LE. H. Griffiths, 
479. 
Scots pine, mechanical properties of, 
by Prof. A. R. Horne, 434, +465 (G2). 
Scott (Dr. D. H.), Address to Section K, 
170. 
Scorr (Prof. W. R.), on credit, currency, 
&c., 268. 
by F. Balfour 
557 
Scorr-Taaaart (J.), Negative resistance 
devices for use in wireless telegraphy, 
436, +465 (G 14). 
Scottish folk-lore, by D. A. Mackenzie, 
445. 
peste people, discussion on origin of, 
Sea, Internal movements in the, by Dr. 
H. Pettersson, 411. 
Seaplanes, by A. J. Miley, *435. 
Seismological investigations, Report of 
Committee on, 206. 
Sense of humour in school children, by 
Dr. C. W. Kimmins, 449, +466 (J 15). 
Sewage gas for power purposes, by J. D. 
Watson, *437, +466 (G 20). 
Sex and growth features in racial 
analysis, by Miss R. M. Fleming, 444. 
Sex differences in tests of constructive 
ability, by Miss M. McFarlane, 447. 
Sex-reversal in frogs. .., by Dr. F. A. E. 
Crew, 420, +465 (D 3). 
Suaw (J. J.), on seismological investi- 
gations, 206. 
~~ (Lady), on training in citizenship, 
SHaxsy (Dr. J. H.), Testing of colour 
discrimination, *447. 
SuEpparr (T.), List of papers, 1920, on 
zoology, botany, and prehistoric archwo- 
logy of British Isles, 499. 
Shetlands, Geophysical observatory in 
the, by C. Mitchell, *409. 
pap eee genus..., by Miss D. J. Jackson, 
Size and form, discussion on, *453. 
SmitH (Dr. 8. P.), Large electric units, 
435, +465 (G13). 
Smita (Dr. W. G.), Grassland analysis. . ., 
*457, 
. A. Lauper, Hill farms 
in the Lothians, *457. 
SMITHELLS (Prof. A.), on structure of 
molecules, 470. 
Smoke impurities in air of Manchester, 
by W. Thomson, *418. 
Social progress and psychological under- 
standing, by J. C. Flugel, *449. 
Soil protozoa, by D. Ward Cutler, 
+465 (D 10). 
Soil survey work in west of Scotland, by 
M. M. Monie, *457. 
Somatic nucleus in development, by Prof. 
R. C. McLean, 453. 
South African bush, demonstration of, 
by Prof. D. and Mrs. Thoday, *452. 
SoutHwELt (R. V.), Problems relating to 
design of high-speed discs, 341. 
—— and Barsara §. Govan, Stability 
of a rotating shaft, subjected simul- 
taneously to end thrust and twist, 345. 
Spectra of hydrogen from long vacuum 
tubes, by Prof. R. W. Wood, 408. 
422 
any 
