First Class Microscope Stands— Nos. 1 & 2. 



These Stands are contrived for an easy and most accurate mode of 

 applying every kind of illumination ; one of similar construction was 

 shown by S. and B. at the Great Exhibition of 1851, and is thus men- 

 tioned by the Jury. 



" The Stand is excellent in principle ; the body, stage, and appliances 

 beneath, are all carried on one stout bar, on the recommendation of 

 Mr. G. Jackson, by means of which the centring of the Achromatic 

 illumination is rendered easy and certain ; and on any tremor being 

 communicated to the Instrument, it is equally distributed over the 

 whole of the working parts." 



(Reports of the Juries, p. 266, Class X. No. 253.) 



No. 1. Improved Large Microscope. The limb continued £, s. d. 

 under the stage, and with cylindrical fitting and rack- 

 work, for applying all illuminating apparatus with 

 ease and accuracy ; mounted on two pillars and 

 cones, with revolving base to tripod ; body with 

 quick and slow motions, graduated sliding tube, 

 and two eye-pieces ; stage about half an inch thick, 

 with vertical and horizontal actions (given by rack- 

 work and screw, or lever), sliding and revolving 

 planes, and spring clamping piece ; diaphragm with 

 revolving and removeable fittings; large plane and 

 concave mirrors, with lengthening arm, and sliding 

 on a triangular bar ; pliers, joint and forceps, and 



two glass plates 22 



Best Upright Case in Spanish mahogany, with two 



boxes for apparatus 4 10 



Best Upright Case with one box 3 15 



Upright Case iD Honduras with two boxes 3 3 



do. do. one box 2 10 



No. 1. Improved Large Microscope, the same as the above, 



but made very portable 25 



Strong Spanish Mahogany Case for ditto, with covered 



dovetails (19 in. long by 9 in. wide, and 4 in. deep) 3 10 

 No. 2. Improved Smaller Microscope, on the same principle, 

 and with the same actions as No. 1, but with single 



pillar 18 



Best Upright Case in Spanish mahogany, with box 



for apparatus 3 10 



do. Honduras do. do. ... 2 10 



Strong Flat do. in Spanish, and covered dovetails ... 1 15 



