644 



SUMMARY OF CUKEENT RESEARCHES RELATING TO 



Reichert's New Medium Mineralogical Stand A iii c* — This 

 stand (fig. 145) corresponds in general design to stand C {vide supra), with 

 rotatory object-stage, divided into 360 degrees, and vernier readings to 



Pig. 145. 



0*1°. It has cross-graduations for orientation of known preparations. 

 The polariser is easily rotatory, and can be adjusted up and down by a 

 screw ; the four quadrants of rotation are marked by the engaging of a 



* C. Reichert, Vienna, Catalogue, Mikroscope, No. 26 (1908) p. 39, fig. 26. 



