5to*50. tan Circularon application. Wecarry « complete lineof Electrical mnilPhysical Instrumentsand Apparatus. QUEEN &C0.. Inc. 1010 Chestnut St. Philadelphia, Pa. The Pratt & Whitney Co. Have in stock Machines of their own makethat have been used, all in good order,which they offer at… … LATHES FOR Cunsmiths, ToolMakers, Experi-mental and RepairWork, Etc. Send 1or Illus. Catalog.W. F. & Jno. Barnes Co.1999 Ruby Street,KOCKFOHD, III. 644.51!)644,270 models and——Experimental ttlork Inventions Developed. Special Machinery. E. V. BAILLARD, 106 Liberty Street, New York. THE OBER…
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