714 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



lenses of low magnification which may have belonged to a sub-stage 

 condenser, but there is now no fitting for them. 



This Microscope resembles one that had belonged to Sir David 

 Brewster, and was exhibited at the Meeting of the Society on November 

 17, 18 ( .)7, by Mr. C. Lees dirties. An illustrated description by Mr. Nelson 

 appeared in the Journal for February, 1898. From the particulars 



Fig. 76. 



there given Sir David Brewster's instrument appears to have been larger. 

 Its general appearance was very similar to the one now exhibited, but 

 the stage is rectangular and has clips upon it for holding slides in 

 position. 



The case measures outside 11^ in. by 5 J in. by 5^ in. deep. The 

 total length of the body over all, from eye-cap to nose-piece, is 6f in., 



