R. Jung. Heidelberg. 



Fig. 13. 



26. Kuehne's Optical Eye (Fig. 13). 



27. 

 28. 

 29. 



30. 



31. 

 32. 

 33. 

 3-4. 



Knapp's Ophthalmotrope. (Fig. 14.) 

 Knapp's skeleton model. 



O. Becker's Lens Models. A contribution to the history of the 

 development of the lens in the eyes of vertebrates and to the mor- 

 phology of the tissues in the lens of the human eye, with illustrated 

 description. 



Model of the cornea and iris according to Weiss, with plano- 

 concave glass to reproduce the effect of the former and thus to 

 show its influence upon the apparent size and position of the pupil 

 (orthoscope). 



Weiss's Gauge for measuring the distance of the pupils. 

 Sattler's and Nieden's galvano-cauterizer. 



Electrodes for destroying the roots of troublesome hairs on the eyelids. 

 Pick's Ophthalmotonometer. 



