38 The Microscope. 



and the motion is exceedingly smooth and pleasant. At 

 U and y are two posts to which spring clips for holding 

 the slide are attached. They may, if desired, be turned down 

 at the side out of the way, in which position the writer almost 

 invariably has them. The plate is manipulated entirely by the 

 button G Gr. The other might be omitted, but as it was on the 

 original stage, it was allowed for symmetry to remain. The pin 

 E provides what amounts to an adjustable centre, about which 

 the metal plate may move, and it will be found that any desired 

 movement is perfectly definite and certain, and that one liand is 

 entirel}^ free to remain constantly on the fine adjustment. 



The difference between this and the form as regularly built 

 by the Bausch & Lomb Co. involves simply the pin E and cor- 

 responding slot, with the consequent necessity for a larger hole, 

 S T, and the cut away portion, A F. The pieces of chamois re- 

 ferred to provides also, in the writer's opinion, a much smoother 

 movement than the metal points on the regular form. 



WALTER H. BULLOCH. 



HENRY L. TOLMAN, 

 PRESIDENT OF THE ILLINOIS STATE MICROSCOPICAL SOCIETY. 



THE death of Walter H. Bulloch, of Chicago, the eminent 

 microscope maker, is a severe loss, not only to the Illinois 

 State Microscopical Society, of whicli he was for nearly twenty 

 years a prominent member, but to the cause of science at large, 

 and a short sketch of his life and work should not be unin- 

 teresting. 



Mr. Bulloch was born in 1835, at Glasgow, Scotland, and lived 

 there until he was seventeen years of age. About 1852 the 

 family emigrated to New York, where Walter learned the trade 

 of tailor with his father. But his innate fondness for mechan- 

 ical pursuits made him dissatisfied with his prospects, and he 

 was apprenticed to Messrs. Pike & Sons, then a leading firm 

 of opticians and instrument makers in New York city. After 

 serving his time, he went into business on his own account until 

 the war of the rebellion, when he enlisted as a private in the 

 Twelfth N. Y. Volunteers. His term of service, however, was 



