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Description of an Improved Microscopical Turntable. 



By Chas. G. Dunning. 



(Bead February 27tn, 1880.^ 



It has occurred to me that some modification might with advan- 

 tage be made in the ordinary form of Microscopical Turntable. The 

 principle involved in the various self-centering and clipping arrange- 

 ments is good so far as it goes, but the sphere of action with all 

 these is more or less limited, owing to the fact that, however 

 desirable it may be, you cannot possibly work out of the centre with 

 them, and it is with a view to overcome this inconvenience that I 

 have devised the form I now bring to your notice. 



The design consists of the usual circular table as shewn in the figure. 



