381 



INDEX. 



Acari, Notes on Parasitic. S. 



Hirst . . .229 



Adaptation among plants. 



A. B. Rendle . .23 



Addey, F. A universal scale 



for the measurement of 



microscopic drawings .. 211 



— A Note on the measure- 



ment of the vertical 

 dimensions of objects 

 by the use of the gradu- 

 ated fine adjustment . 279 



— Pinus sylvestris . . 341 

 Adulteration, Detection of . 345 

 Age of fish, Determining the . 101 

 Ainslie, M. A. Principles of 



correct microscopic illu- 

 mination . , .87 



— On the black- dot image . 270 



— On the microscopical 



image . . .270 



Akehurst, S. 0. On the 



Silverman illumination 201 



— The larva of Chaoborus 



crystalUnus (de Geer) 264 



Algal cell. The . . .166 



Amateur microscopist dur- 

 ing war-time, The. E. 

 K. Maxwell . . 63 



Amphipleura pellucida, A 



photograph of . .273 



Amphora inflexa, a rare 



marine diatom. G. West 35 

 Amyl alcohol . . .14 



Annual Report for 1918 . 55 



1919 . . .177 



1920 . . .240 



1921 . . .370 



Anopheles, Life-history of . 347 

 Arcyria, The capillitia of . 10 

 Arcyria denudata . . 133 



Arcyriaceae (Mycetozoa) . 6 



Ashe, A. A new incandes- 

 cent light for micro- 

 scopical illumination . 1 



Aulacodiscus grandis . .184 



— Jenischii . . .268 

 Azolla, a water- fern . .201 



B 



Bale, W. M. Notes on mount- 

 ing in sandarac and 

 other media . . 344 



Beacon Hill, Desmids of . 144 

 Black- and white-dot focus. 



A. A. C. E. MerUn . 269 



Blastophaga grossorum . 44 

 Brown, N. E. The fertihsa- 



tion of figs ... 42 



— On the structure and 



growth of diatoms . 265 



— South African species of 



Hydrodictyon . . 335 



— The seed-vessels of Mes- 



embryanthemum sp. . 347 



— Imitative and windowed 



plants . . .361 



Bryce, D. On some Rotifera 



from Spitsbergen . 305 



Bullock- Webster, G. R. On 



the Charophyta . . 256 



Burma, specimens from . 95 

 Burton, I. On a collection 

 of specimens from Bur- 

 ma .... 95 



— On Azolla, a water-fern . 201 



C 



Caffyn, C. H. Rocks and 

 their microscopic struc- 

 ture .... 202 



Callitris quadrivalvis, gum 



juniper ... 13 



Capillitia, Observations on. 



A. E. Hilton . , 5 



