INDEX. 



543 



N 



PAGE 



Nannoplankton . . . 249 



Navicula rhomboides . . 93 



Navicula Smithii . . 443 



Nelson, E. M. Navicula 

 rhomboides and allied 

 forms . . . .93 



On dark-ground illumina- 



tion .... 203 



A note on the Amician test 217 



On methods of illumination 289 



An improved compound 



microscope by James 

 Mann . . . .317 



Notes on exhibits . .441 



The Rousselet compressor 511 



An improved chromatic 



condenser . . .513 



An aplanatic spot-lens . 514 



On the " Pseudopodia " 



(Diatoms) . . 576 



Nepheline Basanite (exhibit) . 225 

 Neumania papillosa sp. nov. . 110 

 Neumania triangularis sp.nov 223 

 Nose-piece, sliding. A. C. 



Banfield . . .121 



Notholca triarthroides . .371 



Notices of books 



25, 123, 321, 445, 519 



O 



Obituary notices : 



Bywater, W. M. . . 241 



Dallinger, W. H. . . 34 



Wesche, Walter . . 145 



O'Donohoe, T. A. Dimorph- 

 ism in the spermatozoa 

 of the flea and blow-fly. 313 



Origin of life, Lankesterian 



theory of the . .356 



Arrhenian theory of the 358 



Parasitism amongst Protozoa. 



E. A. Minchin . . 1 



Parolein as a mounting me- 

 dium . . . 331 

 Penard, E. On some Rhizo- 



pods of Sierra Leone . 299 

 Phyllotoma sp., The habits of 538 

 Polyoeca dumosa . . .23 



President's Address, 1910. 



E. A. Minchin . . 1 



1911. E. A. Minchin . 165 



1912. E. A. Minchin . 339 



PAGE 



Proales {Notommata) gigantea. 



Note on John Stevens 481 



Problems of evolution in the 



Protozoa . , .165 



Proceedings. Oct. 1909 



Feb. 1910 . . .27 



Mar. 1910 Jtme 1910 . 125 



Oct. 1910 Feb. 1911 . 219 



Mar. 1911 June 1911 . 327 



Oct. 1911 Feb. 1912 . 451 

 Protista, the . . .167 

 Protoplasm, its natiire and 



structure . . . 344 



" Pseudopodia " (Diatoms), 



On the E. M. Nelson 516 



R 



E. 



Rat-flea, dissections of 



A. Minchin . . .333 



Reid, Duncan J. Critical 

 illumination in visual 

 work with the microscope 487 



Bhabdonema minutum. N. 



E. Bro^m . . .517 



Rheinberg, Julius. On resolu- 

 tions obtained with dark- 

 ground illumination and 

 their relation to the 

 Abbe theory . .501 



Rhizopods of Sierra Leone. 



E. Penard . . .299 



Rosseter, T. B. Hymenolepis 

 upsilon, a new species 

 of Avian tape- worm . 147 



Rotifera, New species of 



C. F. Rousselet . .161 



Rousselet, Charles F. On 

 three new species of 

 Rotifera . -161 



On Notholca triarthroides 



Skorikow, Cathypna 

 brachydactyla Steenroos, 

 and on a new Brachionus 

 from Devil's Lake, North 

 Dakota . -371 



Rousselet compressor, the 



E. M. Nelson . -511 



Row, R. W. H. The habits 



of Phyllotoma sp. . 538 



S 



23 



Salpingoeca spp. . ' . . ; 



Saville-Kent's work on British 



Hydraclmids. C. D. Soar 251 



