ZOOLOGY, AND BOTANY, MICROSCOPY, ETC. 



91 



MICROSCOPY. 



A. Instruments, Accessories, etc.* 

 (1) Stands. 



Zeiss' Microscope for Investigating Ultra-microscopical Particles.f 

 This instrument is clamped to the foot-plate or board on which the rest 



Fig. 5. 



of the apparatus for demonstrating ultra-microscopic particles are placed. 

 The microscope has a large mechanical stage and a special object-stage o, 

 which can be elevated. It is provided at the back with a beading for 



* This sub-division contains (1) Stands ; (2) Eye-pieces and Objectives ; (3) 

 Illuminating and other Apparatus; (4) Photomicrography; (5) Microscopical 

 Optics and Manipulation ; (6) Miscellaneous. 



f Zeiss' Catalogue, Ultra-microscopy and Dark-ground Illumination, 3rd ed., 

 1907, pp. 15-19, fig. 11. 



