ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 



231 



MICROSCOPY. 



A. Instruments, Accessories, &c* 

 CD Stands. 



Ross' New Microscope. — Messrs. Ross have brought out a new Micro- 

 scope which follows their " Standard " model and is specially intended 

 for the use of medical students (figs. 36 and 37). 



Its special feature is a new patent fine adjustment which, instead of 



Fig. 36 



Fig. 37. 



the triangle bar, consists of a parallel slide fitting, firmly fixed to the 

 stage. 



The moving part is cast on the limb carrying the optical tube, and 

 held in its place by a sleeve-piece bolted securely at the back. A spiral 

 spring, which is placed forward to compensate for the overhanging weight 

 of the body, raises the limb, while the micrometer screw, with its point 

 working on a hardened steel surface, depresses it. 



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

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

 and Manipulation; (6) Miscellaneous. 



