Index of Papers published in the “ Transactions ” 
during Session 1920-21. 
(Arranged under the Authors’ Names.) 
Harvey (Elsie J.) and White (P. Bruce). See 
Rennie (John). 
Kidston (R.)and Lang (W. H.). On Old Red 
Sandstone Plants showing Structure, from 
the Rhynie Chert Bed, Aberdeenshire. Part 
IV : Restorations of Vascular Cryptogams, 
and Discussion of their Bearing on the 
General Morphology of the Pteridophyta and 
the Origin of the Organisation of Land Plants, 
vol. lii, Ho. 32, 1921, pp. 831-854. 
Lang (W. H.). See Kidston (R.). 
Rennie (John), Harvey (Elsie J. ), and White (P. 
Bruce). Isle of Wight Disease in Hive Bees, 
vol. lii, No. 29, 1921, pp. 737-779. 
Thompson (J. M‘L.). Studies in Floral Mor- 
phology : No. II. The Staminal Zygomorphy 
of Couroupita guianensis, Aubl., vol. liii, 
No. 1, 1921, pp. 1-15. 
White (P. Bruce) and Harvey (Elsie J.). See 
Rennie (John). 
Wordie (J. M.). Shackleton Antarctic Ex- 
pedition, 1914-17 ; Depths and Deposits of 
the Weddell Sea, vol. lii, No. 30, 1921, pp. 
781-793. 
Shackleton Antarctic Expedition, 1914- 
17 : The Natural History of Pack Ice as 
observed in the Weddell Sea, vol. lii, No. 31, 
1921, pp. 795-829. 
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