766 



BECORD OF CURRENT RESEARCHES RELATING TO 



Fig. 2 represents the Portable Demonstration Microscope of Messrs. 



Nachet, which is very handy and convenient for class demonstration.* 



It consists of a tube carrying the objective and eye-piece, which 



slides within another attached to a handle by means of which the 



Microscope is held by the observer and directed to the light. To the 



handle is fixed a rod which carries the stage and illuminating apparatus. 



* Cf. loc. cit., p. SI. 



