31. Microscope, with tripod stand ; long body, inclin- 

 able, and having a movement of rotation around its 

 support ; coarse adjustment by rack and pinion ; fine 

 adjustment by micrometer screw ; mechanical stage 

 having rectangular movements ; revolving diaphragm ; 

 plane and concave mirror ; three eye-pieces ; seven objec- 

 tives (from 3 in. to T V in.) by different makers ; double 

 nose-piece ; stage and stand condensers ; Lieberkuhn's 

 reflectors (4) and parabolic side illuminator ; Wollaston's 

 camera lucida and a total reflection prism : also stage 

 and hand forceps and live boxes. Supplied with polariz- 

 ing apparatus and the requisite sub-stage adjustments. 

 In two mahagony cases. Made by Jas. Smith. 



B. 28. 1891. Bequeathed by Miss 8. Marshall. 



32. Microscope, with horse-shoe stand ; long, inclin- 

 able body ; coarse adjustment by rack and pinion ; fine 

 adjustment by micrometer screw ; mechanical stage with 

 rectangular movements ; revolving diaphragm ; plane 

 and concave mirror; four eye-pieces; 2 in., ^ in., in., 

 | in., T L in. objectives ; stage forceps. Supplied with screw 

 micrometer, Roberts' test and micrometer, Maltwood's 

 finder, and various micrometric scales. Adapted for use 

 as a polarizing microscope. In upright mahogany case. 

 Made by A. Ross. 



E. 29. 1891. Bequeathed by Miss 8. Marshall 



33. Microscope on double pilla,r stand, with long tube, 

 inclinable ; coarse adjustment by rack and pinion ; fine 

 adjustment by micrometer screw ; mechanical stage ; 

 revolving diaphragms ; double mirror ; two eye-pieces ; 

 no objectives shown ; condenser on separate stand ; stage 

 forceps and live box. 



Exhibited by Newton fy Co. 1869. Price (complete) 10/. 



34. Microscope with large horse-shoe stand ; short 

 tube with graduated draw tube, inclinable ; coarse 

 adjustment by rack and pinion ; fine adjustment by 

 graduated micrometer screw; plain black stage with 

 nickel clips ; sta,ge and all above it rotating about the 

 optical axis ; cylinder diaphragms with apparatus for 

 centering, mounted on a swinging arm with rack and 

 pinion elevator ; plane and convex mirror ; two eye- 

 pieces (Nos. 1 and 2) ; two objectives (A and D) ; upright 

 mahogany case with places for accessories. 



