11. Jung, Heidelberg. 31 



35. Pristley Smith's lamp, improved by Leber, for lateral illumination 

 of the eye and for ophthalmoscopic examination, in particular, suitable 

 for use at the bed side. 



36. Dr. Rindfleisch's Sciascope. 



37. Dr. Weiss's Exophthalmometer. 



Fig. 15. 



38. Hering's small apparatus for testing binocular vision (Fig. 15). 



Fig. 16. 



39. Thoma's plates for studying the circulation of blood 



a) in the mesentery and omentum of rabbits, dogs etc. (Fig. -16), 



b) in the frog's tongue, (Fig. 17), 



c) in the mesentery of the frog, 



d) in the web of the frog, 



e) in the lung of the frog. 



