INDEX. 



387 



Tierney, 0. Mosquito inves- 

 tigation . . . 347 



Tow-net catch, Preserving 



the . . . . 219 



Tracheal tubes in Acari . 229 



Traviss, W. R. A burner for 



incandescent gas lamp 42 



— An incandescent gas-lamp 92 



— On the " heaUng " of 



glass .... 92 



— A cover-glass cleaner . 249 

 Treasurer's Report for 1918 61 



1919 . . .182 



1920 . . .248 



1921 . . .378 



Triassic district, The Desmid 



flora of a. G. T. Harris 137 

 Trichiaceae (Mycetozoa) . 6 



Trichia scabra . . .132 



V 



Vertical dimensions of ob- 

 jects. Measurement of. 

 F. Addey . . .279 



Vivipary in Poa alpina . 93 



W 



Wallis, T. E. The use of 

 amylic alcohol and san- 

 darac in roicroscopy . 1 3 



PAGE 



Wallis, T. E. Microscopy 



as an aid to analysis . 345 



Watson's stainless steel mir- 

 rors . . . .263 



Welsbach gas light . . 1 



West, Prof. G. S. Elected an 



Honorary Member . 41 



— On rich Desmid areas . 138 

 West, George. Amphora 



inflexa, a rare British 

 diatom ... 35 



Wilson, J. A short account 



of the genus Closteriima 360 



Wood, H. A new polariser 



of large field . .341 



Woodbury Common, Des- 



mids of . . . 143 



Wycherley, S. R. The mi- 

 croscopic examination 

 of paper fibres . .204 



Y 



Yermoloff, N. The law of 

 continuity as applied to 

 the Mycetozoa . . 46 



— Notes on continuity and 



discontinuity in nature 

 as illustrated by diatom 

 structure . . .193 



— On a marine plant, Posi- 



donia caulini . . 253 



