IV 



INDEX. 



INDEX TO ILLUSTRATIONS. 



PAGE. 



Acme Microscope No. 3 (Fig. 8) 9 



Acme Microscope No. 2 (Fig. 29) 203 



Actinosphaerium Eichornii (Figs. 11 and 



13) 41 



Aptogonium Baileyi (Fig. 6) 7 



Biological Microscope, Bulloch (Fig. 18). 87 



Bulbochrete intermedia (Fig 22, IV) 121 



Bulbochaste mirabilis (Fig. 22, II) 121 



Bulbochcete nana (Fig. 22, V) 121 



BulbochiieLe rectangularis (Fig. 22, I)... 121 



Cell for Opaque Objects (Fig. 28) 202 



Cercaria Hyalocauda (Figs. 34, 35 and 



36) ; 231, 232 



Chantransia violacea (Fig. 13) 44 



Conferva abreviata (Fig. 9, Z) 21 



Conferva floccosa (Fig. 9, ^) 21 



Conferva fugacissima (Fig. d, G) 21 



Conferva punctalis (Fig. 9, 0) 21 



Culture-cell (Fig. 24) 142 



Cylindrocapsa geminella (Fig. 17) 83 



PAGE. 



Desmidium Swartzii (Fig. 7) 7 



Economic Microscope, Beck (Fig. 16).. 64 

 Histological Microscope, Crouch (Fig. 10) 25 



Illuminator, A Catoptric (Fig. 30) 204 



Illuminator for Opaque Objects under 



High Powers (Fig. 31) 205 



Injecting Apparatus (Fig. 23) 141 



Microscope, Riddell's Binocular (Figs. 



32 and 33) 22l, 228 



Microspora vulgaris (Fig. 9, I/) 21 



Objective, Concave Front for (Fig. 21).. 102 

 Ocular, A New Stereoscopic (Fig. 27). . 201 



Ophrydium Adse (Figs. 1 and 5) 4 



Paraboloid, Diagram for (Fig. 19) 101 



Paraboloid, Form of (Fig. 20) 102 



Slide-cutter and Grinder (Figs. 14 and 



15) 61 



Turn-table. The New "Congress" 



(Fig. 25) 163 



Warm-stage for the Microscope (Fig. 26). 181 



