LIST OF ILLUSTRATIONS. 



Page. 



Stratton's Illuminator (plate) i 



Zentma^ei's Dissecting Microscope (plate) i 



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



Taylor's Freezing Microtome (plate) 25 



Gonatozygon aculeatiim (figure) 29 



Apparatus for Controlling Living Organisms (figure J 31 



Camera for Micro- photography (figure) 39 



A Nice Sterilizer (figure) 39 



Van Heurck's Large Microscope. (plate) : 49 



Rhizopod. Clathrulina Elegans (figure) 53 



Apparatus for Biological Examination of Water (figure) 1^5 



Funnel (figure) 56 



Plans and Sections ot Slides and Cover-glass (figure) 58 



Edinger's Drawing Apparatus (figure) 66 



Durkee's Electric Illuminator (figure) 67 



Beck's New Bacteriological Star Microscope (plate) 81 



Abbe Illuminator (figure) 83 



Camera lucida (figure) 81^ 



An All-around Microscope (figure) 91 



Saj're's Pocket Microscope (figure) 95 



Biological Study of the Potato I'plate) 1015 



Bausch & Lomb's New Microscope (plate) 129 



Continuity of Protoplasm (figure) 131 



Some New Desmids (plate) 153 



Lane-Sear Microscope Lamp (figure) .. 16:; 



Box for Slides (figure) 166 



Pressureless Mounting-Clip (figure) 166 



Radiolaria (plate) 177 



A Convenient Sterilizer (figure) 192 



Zentmayer's American-Continental Microscope (figure) 194 



Tripod Edinburgh Student's Microscope (plate ) 201 



Protozoa (plate) 225 



Index of Refraction (figure) 226 



Refractometer (figure) 228 



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 



