PILLISCHER'S MICROSCOPE. 91 



with a double mirror and one pair of eye-pkces, the latter 

 having rack and pinion adjustment. It is seen in fig. 46, 

 and sold as there represented for 6/. a less sum than is 

 charged for altering the larger microscopes. 



Fig. i7.-FiUi$chr'i No. 1 Binocular Microtoopt. 



