ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 1045 



Fig. 209 



Fig. 210. 



Queen's Acme No. 4 Micro- 

 scope.* — Messrs. J. W. Queen & 

 Co's. " Acme No. 4 " Microscope 

 (figs. 209 and 210) differs from 

 the previous " Acme " models in 

 having the fine-adjustment at the 

 lower end of the straight part of 

 the limb. The diaphragm is also 

 on a hinged arm which may be 

 readily swung aside when oblique 

 light is required. The mirror 

 arm slides in a groove in the 

 swinging tail-piece. 



Micr. Bulletin (Queen's), iii. (1886) p. 17 (1 pi. and 1 tig.). 



