1883] 



MICROSCOPICAL JOURNAL. 



145 



Wenham's Radial Microscope. 



Messrs. Ross & Co. have made 

 a number of stands according to 

 the designs of Mr. Wenham, which 

 they have designated by the name 

 heading this article. The radia 

 microscope is the most complete and 

 perfect stand ever devised. It 

 seems to meet every demand that 

 the microscopist can ever make of a 

 stand. 



An examination of the cut (fig. 24 

 will give a good idea of the plan ot 

 construction. It will be 

 observed that the object is 



a centre about which every 

 moving part turns. Placing 

 the mirror on the base, directly 

 beneath the centre of the stage, 

 in a place provided for it, the 

 light can be thrown upon the 

 object and will remain upon 

 it while the stage, or the body- 

 tube, are inclined to either side. 

 The following is clipped from 

 the catalogue of the manufac- 

 turers, and will serve to bring 

 the principal features of this 

 stand into notice : — 



" This Microscope has been 

 devised for the special purpose 

 of obtaining the maximum 

 range of oblique illumination in 

 all directions, which is attained 

 by causing all the movements 

 of inclination and rotation to 

 radiate from the object as a 

 common centre. Seven radial 

 motions are here combined : — 

 I. The inclination of the 

 whole instrument (except the 

 base) from the perpendicular 

 to the horizontal, by 

 means of a sector slid- 

 ing between jaws at- 

 tached to the upper 

 base-plate. 



2. The lateral incli- 

 nation of the limb to 

 either side, carrying 

 with it the tail-piece, 

 etc., or of the limb ard 

 •, the tail- 

 g clamped 



Fig. 24. — Wexham's Radial Mickoscufe. 



