700 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



by P. Culmann to serve the combined purposes of a preparation, an 

 observation, and a drawing Microscope. The stand is fitted with Zeiss' 



o 



M 



&4 



objective a* with changeable magnifying power, and the object is 

 placed at about 10 cm. distance. The stage opening and mirror are 



