28 R. Jung, Heidelberg. 



13. Water Bath for paraffine embedding, similar to No. 12 but smaller. 



14. Thermo-regulator, new design. 



. Fig . 9. 



Registered! (Fig. 8). 



15. Dissecting stand with three low powers, with large bright and 

 black reflector. 



16. Hones for setting microtome knives. 



II. Physiological and Ophthalmologieal Instruments. 



17. Foerster's Perimeter, new model (Fig. 9). 



18. Pristley Smith's Perimeter (Fig. 10). 



19. New Perimeter on adjustable stand (Fig. 11). 



20. Helmholtz's Phacoscope for studying the changes of accomodation 

 in the eye. 



21. Clock work for coloured discs, with set of discs, with speed 

 regulator and oscillating prism. New Model (Fig. 12). 



22. Rotating Apparatus for three colour discs or for one disc of 

 30 cm diameter. New model. 



23. Coloured papers and colour books. 



24. Coloured transparent letters. 



25. Rock crystal lenses. 



