362 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



end and is fixed by a dovetailed slide c, and clamped by a screw K ; 

 tbis part is rotatory about tbe pillar. Simple loups are placed in tbe 

 rotatory disc G, revolver fashion, of magnifying power 1*7 to 10. For 

 bigber magnifications tbe Microscope-tube H with tbe help of tbe plug a 

 is inserted, and bears at its lower end six objective systems of magnifying 

 powers 12 to 38. Tbe drawing is effected by tbe arrangement sbown, 

 wbich was fully described in a previous number of tbe Journal * 



? , , , , so ioo isoTnM. 



■M ' I ' I ' I ' I ' ' ■ ' i I ■ I ' ''» I » 1 ) 1 



Fig. 78. 



Moll's Apparatus for the Adjustment of a Projection Micro- 

 scope.f— The object of tbis apparatus is to enable tbe lecturer, who 



* Journal R.M.S., 1892, p. 264. 



t Zeitechr. wiss. Mikr., xviii. (1901) pp. 129-37 (2 figs ). 



