290 



Transactions of the Society. 



with a spruag pinion, and a short lever nose-piece fine adjustment. It 

 is here mentioned particularly on account of the peculiar manner in 



Fig. 80. 



which it is attached to its pillar, and also for the shape of its flat 

 tripod foot. The limb of this Microscope, instead of being supported 

 by a compass joint at the top of a single pillar, was attached to the 



