May 3, 1889.] 



SCIENCE. 



C. & C. ELECTRIC MOTOR COMPANY. 



Electric Motors 



FOR 



Arc and Incandescent Cir- 

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 Regulation Perfect. 

 Motors Designed for all 

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OFFICE and MANUFACTOKY: 



402 and 404 Greenwich Street, New 

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New England Office, 19 Pearl St,, Boston. 



Philadelphia Office, 301 Arch St. 



Western Office, 139-141 Adams Street 

 Chicago. 



Southern Office, 25 Carondelet Street, 

 New Orleans, 



THE 



M Itklm 



COMPANY. 



98 MILK ST,, BOSTON, MASS. 



Tliis Company owns the Letters 

 Patent granted, to Alexander Gra- 

 ham Bell, March 7th, 1876, No. 

 174,465, and January 30, 1§77, 

 No. 1§6,787. 



The Transmission of Speech by 

 all liiiown forms of BLECTBIC 

 SPEAKING TELEPHONES in- 

 fringes the right secured to this 

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 renders each individual user of tel- 

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 therefor. 



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Works : Oamden, N. J. '2G John St., New V'oi'k. 



0/d and Rare Books. 



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H. WILLIAMS, 

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Scientific Apparatus. 



J. GRUNOW 



631 Sixth Avenue, New York 



Established 1852. 



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IMPROVED OIL LIGHT 



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J. B. COLT & CO., Manufacturers, 

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GEO. H. PIERCE, 



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MORRIS EARLE k CO. 



SUCCESSORS TO 



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1016 Chestnut Street Phila 



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Adl'ised free of charge. 



