286 The Microscope. 



that it may not be upset. The heavy foot of the stand removed 

 and set on a steel point, makes an admirable turn-table, its 

 weight giving it such momentum that, with one impulse, it 

 revolves for a long time. Clips, usually so objectionable, are not 

 so on this stand, being fixed to a bar, acted on by springs, so 

 that they may be turned back, leaving the stage clear. Screws 

 adjust the springs to regulate pressure on the slides. 



The glass stage is ample for all conceivable use, and being 

 round gives a better opportunity to manipulate the slides than 

 if square. 



The fine adjustment is admirable in its action and not open to 

 the objection of most other methods in which the action runs 

 out, requiring readjustment. 



The draw tube arrangement makes it suited to the long Eng- 

 lish or short German notions. The sub-stage ring enables the 

 use of needed accessories, the Wenham parabola, Abbe condenser 

 and the Polariscope. The ring removed, one may have extreme 

 oblique illumination. The swinging and extension mirror bar 

 affords various methods of illumination above and below the 

 stage. 



The easy portability of the stand serves my purpose in every 

 way. I rarely fail to take it to the meetings of our Illinois 

 State Microscopical Society, where it has been peculiarly useful. 

 With its ingenious lamp attachment, it ma}^ be handed around 

 among the members for the examination of slides illustrating 

 the subject under consideration. No other stand is so service- 

 able in this respect; hence, it has been to our meetings many 

 times more than any other kind. I regret the fact that it is 

 often the only one there, which may be because it is always 

 expected and best serves every purpose. 



As to its expense, so much merit cannot be afforded at the 

 cost; of the cheapest stands; but in view of its versatility, and 

 tliat it is all any practical microscopist needs, it is an econo- 

 mical investment. 



I have been impelled to write this partly because "Amateur," 

 in his Encyclopedia of American Microscopes, has ignored the 

 existence of this stand, which was surprising, in that the Griffith 

 is peculiarly the exponent of most of the merits he has praised 

 in other stands, and so far as I can now recall, has none of thQ 

 demerits which he condemned. 



