LIST OF ILLUSTRATIONS. 



Stratton's Illuminator (plate) i 



Zentmavei's Dissecting Microscope (plate ) i 



Koch's and Woltz' Microscope Lamp (figure) 2 



Taylor's Freezing Microtome (plate) 2^^ 



Gonatozvgon aculeatuni (figure) 29 



Apparatus for Controlling Living Organisms (figure ) 31 



Camera for Micro-photography (figure) 30 



A Nice Sterilizer (figure) 30 



\^an Heurck's Large Microscope (plate) zjo 



Rhizopod. Clathrulina Elegans (figure) 1^3 



Apparatus for Biological Examination of Water (figure) i^:; 



Funnel (figure) (56 



Plans and Sections ot Slides and Cover-glass (figure) i;S 



Edinger's Drawing Apparatus (figure) 66 



Durkee's Electric Illuminator (figure) 67 



Beck's New Bacteriological Star Microscope (plate j 81 



Abbe Illuminator (figiu-e) 8-' 



Camera lucida (figure). 815 



An All-around Microscope (figure) oi 



Savre's Pocket Microscope (figure) gr 



Biological Study of the Potato (^plate) loi; 



Bausch & Lomb's New Microscope (plate; 129 



Continuity of Protoplasm (figure ) 131 



Some New Desmids (plate) ir? 



Lane-Sear Microscope Lamp (figure) 161; 



Box for Slides (figure) 166 



Pressure less Mounting-Clip (figure) 166 



Radiolaria (plate) 17-: 



A Convenient Sterilizer (figure) 192 



Zentmaver's American-Continental Microscope (figure) 194 



Tripod Edinburgh Student's Microscope ( plate I 201 



Protozoa (plate) 225 



Index of Refraction (figure) 226 



Refractometer (figure). 22S 



Bertrand's Refractometer (figure) 228 



Potato-Section Cutter (figure) 244 



Radiolaria (plate) 249 



Lighton's Analyzing Eye-piece (figure) 260 



Rotifers (plate) 273 



A Cheap .Microscope Lamp (figure) 287 



1700 



