INDEX. 



385 



Notices of Books {cont. ) : 



Stone, H. A Guide to the 

 Identification of our 

 More Useful Timbers . 171 



Smith, H. G. Minerals 

 and the Microscope . 171 



Lister, G. The Mycetozoa 172 



British Mycetozoa, Guide 

 to the (B.M.) . . 172 



Doncaster, L. An In- 

 troduction to the Study 

 of Cytology. . .173 



Wesenberg Ltmd, C. Con^- 

 tributions to the Biology 

 of the Danish Culicidae 237 



Ballard, C. W. The Ele- 

 ments of Vegetable His- 

 tology . . . . 238 



Scott, J. The Microscope 

 in the Mill . . . 239 



Cross, M. I., and Martin J. 

 Cole. Modern Micro- 

 scopy . . . . 333 

 Notops brachionus, var. 



spinosus. T. Garnett . 48 



O 



Obituary Notices : 



Baxter, W. E. . . 249 



Bennett, L. C. . .50,55 



Crisp, Sir F. , . .96 



George, L. . . .94 



Hopkinson, J. . .103 



Hughes, F. . . . 340 



Mainland, G. E. . . 264 



O'Donohoe, T. A. . . 255 



Parsons, F. A. . .278 



Rousselet, C. F. . 340, 379 

 Spitta, E. J. . . .277 



Turner, C. . . . 362 



West, G. S. . . 104, 187 



Objectives, The selection of 294 

 Optical index . , 49, 286 



Orchids, Pollination of . 27 

 Otodectes cyonotis, var. cati . 229 

 Oxford University Expedi- 

 tion to Spitsbergen. J. 

 S. Huxley . . .299 



— Report 4 (C. D. Soar) . 301 



16 (D. Bryce) . , 305 



Oxley, F. The magnifying 



power of a microscope 



and some methods of 



ascertaining it . . 41 



Oxus, The genus (Hydracar- 



ina). CD. Soar, . 29 



PAGE 



Oxus ovalis ... 32 

 Oxus plantaris ... 30 

 — strigatus . . .33 



Paper fibres, The microscopic 

 examination of. S. R. 

 Wycherley . . .204 



Parasite of Mniobia russeola 328 

 Parasitic acari. S. Hirst . 229 

 Paulson, R. The micro- 

 scopical structure of 

 hchens . . .163 



Perichaena corticalis . . 131 



Physarum nutans . . 134 



Pinus sylvestris. F. Addey 341 

 Plane-wave illumination 



(Abbe) ... 75 

 Plant nutrition and soil bac- 

 teria. A. B. Rendle . 260 

 Plasmodia in wood . . 135 



Pledge, J. H. On three new 

 Hght filters ... 95 



— The use of light filters in 



microscopy . . 270 



Pleuretra Brycei, var. . 325 



Pleurosigma formosum, 7 



photograph of . .269 



Pleurotaenium truncatum . 147 

 Polarisation : rings in quartz 



and N.A. E. M. Nelson 340 

 Polariscope. E. M. Nelson 335 

 Polariser, A new form of. E. 



M. Nelson . . .19 



— New, of large field. H. 



Wood . . .341 



Pollen-grains, polarisation of 96 



— development of. A. E. 



Rendle . . .352 



Pollination in orchids . . 93 



Posidonia australis . . 253 



— caulini .... 253 

 Powell, T. H. Elected an 



Honorary Member . 55 



Practical microscopy. Some 



facts and fancies of. 



A. A. C. E. Merlin . 274 



President's Address, 1919. 



A. B. Rendle . .23 



1920. A. B. Rendle 197 



1921. A. B. Rendle 260 



1922. A. B. Rendle 350 



Proceedings from : 



Oct. 8th, 1918, to Feb. 11th, 



1919 , , , . 41 



