No. 54 449. 



Auxiliary Apparatus for Microscopes. Solar Microscopes. 



539 



54443. 1:5. 



50 212. 1 : 7. 



54 444. 1 : 4. 



s. d. 

 1. 0.0 



6. 0.0 



54.443. 6 Small Coloured Bottles in Stand with Droppers which serve as stoppers, Figure, 

 for making coloured microscopical specimens 



54.444. Micro-photographic Apparatus, Figure, with 2 dark slides, 1 ground glass and 

 1 transparent plate, 1 ground glass plate on stand, yellow, green and blue glass discs: 

 price without microscope stand 



Two metal columns sliding in each other are mounted on an iron base, the camera resting on 

 these columns. Any microscope stand can be used with the apparatus. By sliding the camera it is 

 possible to compensate for the in equality in height of the different stands. The diaphragms whict 

 can be slipped into the neck of the camera fix the limits of the image on the plate. A magnifier placed 

 above the camera permits of fine focussing. The slides are suitable for plates 9 x 12 and 13 x 18 cm. 



54.445. Focussing Stage or above 0. 15. 



54 446. Auer Lamp with Reflector 0. 18. 



54,447. Illuminating Lens 100 mm diameter, on stand 1. 4. 



Solar Microscopes. 



54,448. Solar Microscope, Figure, constructed entirely of brass, arranged for fitting on 

 one of the hcliostats Xos. 50,205 50,212, with alum trough for absorbing the heat 

 rays; the objective and illuminating lenses are focussed by two racks having sloping 

 teeth, thus seQiiring quite uniform motion. For objective see Nos. 54,453 54,455 . 6. 



0.0 



54,449. Solar Microscope combined with Heliostat No. 50,212, Figure. Solar Microscope 

 as before, Heliostat for screwing to the shutter; with horizontal toothed-wheel motion; 

 mirror actuated by endless screw; with one attachment having a straight gap and one at- 

 tachment with rotary disc which contains a wavy gap and holes of different size . . 12. 0. 



Tables for Microscope work: see Nos. 50,362 50,367, pp. 69 and 70. 



C'l. 3804, 1565. 

 156B, 1560. 



