'62 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



head of the tine-adjustment is equal to ^ - in., and the head has divisions 

 to read to TB Vtr i n -> f° r fracture measurements. The mirrors, in addition 

 to their universal motion, swing over the stage upon a centre behind 

 it, for the illumination of opaque objects. For high power-work an 

 opaque illuminator is attached to the ,1-in. objective, mounted as short as 

 possible to secure a maximum of light upon the specimen. There is 



CREICHERT, WIEN 



tiiijHifrfrgjai 



lUi; — ;;:::ui.i.;ii. 



Fig. 161. 



also a 1-in. objective, with parabolic illuminator and angle silver 

 reflector combined, and a substage iris-diaphragm for observation of 

 transparent objects. 



Reichert's Travelling Microscope.* — This apparatus is shown in 

 figs. 161 and 162. The stand (No. 52 in the Catalogue) is practically 



* C. Reichert, Vieu a, Catalogue, Mikmscope, No. 26 (1908) p. 32, figs. 19-20. 



