650 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



Edinger's Projection and Drawing- Apparatus.* — As shown in the 

 illustration (fig. 151), this apparatus is an improved form of an older 



Fig. 151. 



type previously described, t and now also adapted for photographic 

 purposes by the addition of Nieser's camera. 



* Leitz' Catalogue, No. 41, 1905, p. 98. t See this Journal, 1891, p. 811. 



