118 SUMMARY OF CURRENT RESEARCHES RELATING TO 



In Fuess's Eeflecting Goniometer* (fig. 13) two Microscopes 

 are also arranged in a somewhat peculiar manner for reading off the 



Fir.. 13 



divisions on the divided circle. One passes through the telescope 

 and the other through the collimator of the instrument, as shown in 

 the figure.f 



* Bericht liber die wiss. Instrumente auf der Berliner Gewerbeausstellung 

 im Jahre 1879 (L. Loewenberg), pp. 321-30 (4 figs.). 



t The left (similar) half of the woodcut has been removed. The lettering 

 refers to the parts of the instrument other than the Microscope. 



