ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



101 



MICROSCOPY. 



A. Instruments, Accessories, &c* 

 (1) Stands. 



Koristka's large Model Microscope. f — F. Koristka's large model 

 Microscope, IV. a (fig. 25) has a rectangular ebonite stage, 88 X 85 mm., 



Fig. 25. 



and an Abbe condenser of N.A. 1"2. The substage apparatus is raised 

 and lowered by means of rack and pinion movement, and is supplied 



* This subdivision contains (1) Stands; (2) Eye-pieces and Objectives; (3) Illu- 

 minating and other Apparatus; (4) Photomicrography; (5) Microscopical Optics 

 and Manipulation ; (6) Miscellaneous. 



X F. Koristka's Special Catalogue, Milan, November, 1904. 



