575 



INDEX. 



A. 



PAGE 



Abbe's apertometer, method of 



using. F. J. Cheshire . 349 

 ,, test of aplanatism . . 567 

 Actinocychis Ralfsii. origin of 

 colour phenomena in. J. 

 Rheinberg . . . 13, 93 

 Alloys, microstructure of. S. W. 



Smith . . . .125 



AmpMpleura ijeJlxic'ida, resolu- 

 tion of with dry lens. A. 

 A. Merlin . . . 1, 89 

 Anatomy of Drepanidotaenia 



tenuirostris. T. B. Rosseter 399 

 An^us, H. F. The apertometer 



"and its use . . 209,282 



Annual Report for 1900 . . 104 



„ ., „ 1901 . . 296 



;, „ 1902 . . 492 



Anomopus telphusae n. g. and n. 



sp 522 



Apertometer, Abbe's, method of 



using 349 



Apertometer and its use. II. F. 



Angus .... 209, 282 

 Apertometer, protractor . . 210 

 „ substage-scale . 211 



Apertometry and focometry, 

 simple methods of. F. J. 

 Cheshire . . 331, 375, 567 

 Ashe, A. Photography of 



cavities in minerals . 545 

 „ ,, Two-speed fine ad- 

 justments. . .131 

 Ashe's camera lucida . . .88 

 Asplanchna iyitermedla, specific 

 characters of. C. F. Rous- 

 selet . . . . 7, 92 



Ayrton, W. On Zoothamnium 



geniculatnm, n. sp. . 407, 479 



B. 



Bdelloida, new, commensal in 

 branchial cavities of Tel- 

 pfhusa. S. Piovanelli . 521 



Black and white dot. E. M. 



Nelson. 261, 

 284 



PAGE 



Black and white dot. J. Rhein- 



. 113,173 



301, 370 



W B 



Stokes 109. 



173 



Bladderwort, capture of tadpoles 



and fish by. . . 378, 483 



Books, notices of new 75. 161, 271. 



361, 467, 555 

 Bosmina, Ephippium of. D. J. 



Scourfield . . . 51, 96 

 Bryce, D. Remarks on resting 

 eggs of Bdelloid 

 Rotifera . . 374 

 „ „ Two new species of 



Philodina . . 523 



C. 



Callidlna cancrophila, n. sp. . 521 

 Camera lucida, Ashe's . . 88 

 Cathypna ligoyia, n. sp. ]\I. F 



Dunlop . . . .29 

 Cavities in minerals, photo- 

 graphy of. A. Ashe . . 545 

 Cements for holding organisms 



under water . .87 

 ,, for fluid cells . . 146 

 Chaetomlum hostrychoides. G. 



Massee .... 355 

 Chcl'ifer sculpturatns, n. sp. R. 



T. Lewis . . . .497 

 Cheshire, F. J. Method of 

 using Abbe's 

 apertometer . 349 

 „ ,, Simple form of 



reflecting pol- 

 ar iser . .353 

 ,^ „ Simple methods 



of focometry 

 and aper- 



tometry 331, 375, 

 567 

 Cladocera, British fresh-water 431 

 „ Method of feeding 



of . . . . 157 

 Colour phenomena, in Actino- 

 cyclus Halfsii, origin of. 



J. Rheinberg 



13. 93 



