INDEX. 



45a 



Proceedings. Mar. 1917 — 

 June 1917 . 



— Oct. 1917— Mar. 1918 . 



— April 1918— June 1918 . 

 protcrva, Philodina . 

 Protonema of Schistostega . 

 Protorhabd, The 

 Pseudoscorpion - fauna of 



British Isles, Historical 

 account of. H. W. Kew 



Q 



Quekett, Dr., medallion por- 

 trait of . . . 



R 



rapida, Philodina 



Rendle, A. B. Colour in 

 plants and its preserva- 

 tion .... 



— The use of microscopical 



characters in the sys- 

 tematic study of the 

 higher plants 



— Some points in the struc- 



ture and growth of grasses 



regalis, Otostephanos . 



reticulata, Pleureta 



Rodman, G. H. On photo- 

 micrographs as records 



Rotifera, Bdelloid, of South 

 Africa , . 47^ 



— Collecting and mounting. 



C. F. Rousselet . 



— and desiccation 

 —Parasitic 



Rousselet, C. F. Some further 

 notes on collecting and 

 mounting Rotifera 



S 



scahra, Philodina 

 Scepanotrocha galeata sp . 



nov. . 

 Schistostega osmundacea 



■ early history of . 



flask- cells of 



gemmae of 



habitat of 



light-cells of 



Noll on Hght-cells of 



perichaetiiim 



protonema 



Scourfield, D. J. A slide of 



Pleodorina illinoisensis 

 Silicoblasts in Latrunculia . 

 Smithi, Macrotrachela 



PAGE 



336 

 385 

 439 

 75 

 367 

 235 



117 



292 



74 



342 



353 



445 

 171 

 176 



385 



149 



321 



220 

 214 



321 



76 



178 



361 



361 



369 



366 



362 



370 



371 



366 



367 



291 

 238 

 151 



S oar, C. D. Two new species 

 of Hydracarina or 

 Water-mites, Dartia. 

 Harrisi and Eylais Wil- 

 soni . , . , 



— s.v. Williamson, W. 

 Spartina Townsendi . 

 Species, Definition of a 

 Specific characters, Origin of 

 Spicules, calcareous . 



— gelatinous 



— origin of 



— siliceous 



development of 



Sponges, The study of. A 



Dendy 

 Sponges (Porifera) : 

 Calcarea 

 Euceratosa . 

 Myxospongida 

 Tetraxonida . 

 Triaxonida 

 Sporangial characters of 



Mycetozoa . ; 



Stemonitis, Plasmodium of 

 — Sporangia of 

 Sterraster, or Geodia ball 

 Surface-tension, Demonstra- 

 tion of 

 Swift's portable (binocular) 



microscope 

 Synthetic grouping of species 

 Systematics, On the value of 



PAGE 



277 



445 



410 



231 



90 



289 



91 



91 



235 



90 



90 

 91 

 91 

 91 

 91 



137 

 2 

 3 



194 



337 



89 

 40a 

 27, 

 420 



Technical Optics . .329 



Test- object for highest powers 111 

 Timber, Microscopic char- 

 acters of . . . 355 

 timida, Macrotrachela . 152 

 tranquilla, Hahrotrocha . 167 

 Traviss, W. R. A new adap- 

 tation of Swift's portable 

 microscope . . 89^ 



— An apparatus of use in 



pond collecting . .199 



— An adapter for use with 



a Wenham binocular . 396 



— A prism for use over the 



eye-piece in binocular 

 microscopes . . 89 



— Apparatus for demon- 



strating surface-tension 337 

 Treasurer's Report for 1915 105 



1916 . . .305 



1917 . . . 405- 



