SCIENCE. 



[Vol. XIV. No. 336 



DAFT ELECTRIC LIGHT COMPANY. 



Electric Railways. 



Power Stations. 



Stationary Motors 

 '\2 to 100 H.P. 



Car Motors 15 to 

 250 H.P. 



Executive Office, 1 15 Broadway, N.Y. 



FACTORY, JERSEY CITY, N. J. 



Please Mention "Science.' 



Pa'&S. three PaI?E8. 



Hqndred Thousand new pubscriberB for The FamUy 

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MOiyTHS 



bOTela written by American Anthers, complete In 

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FOR 



thli work ft wlde^ known and popular writer. Com- 

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TEN CENTS. 



Liberal pay for literary work adapted to our col- 

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Preipium List the moat complete In the world. We 

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IS^Sent to any addreas. postpaid one year, 50 

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Established 1859. 



H. A. DREW, 



Commercial Printer, 



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New York- 

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THE 



COMPANY. 



9S MILK ST, BOSTON, MASS. 



This Company owns the Letters 

 Patent granted to Alexander Gra- 

 ham Bell, March 7th, 1876, No. 

 174,465, and January 30, 187 7, 

 No. 1§6,787. 



The Transmission of Speech by 

 all known forms of ELECTRIC 

 SPEAKING TELEPHONES in- 

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 therefor. 



OF SUPERIOR AND STANDARD QUALITY. 

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For Sale by all Stationers. 



THE ESTERBROOK STEEL PEN CO., 



Works : Camden, N. J. -26 John St., New York. 



KIMBALL'S 



STRAIGHT CUT 



CIGARETTES. 



Unsurpassed in quality. 



Used by people of refined taste. 

 Highest award at Brussels. 1888. 

 The finest smoking mixtures are of 



mufacture. 

 Fifieen First Prize Medals. 

 WM. S. KIMBALL & CO.. 



Rochester. N.Y, 



GOOD NEWS 

 TO LADIES. 



GrL-atest mducemeuts ever of- 

 fered. Kow's your time to get 

 up orders for our celebrated 

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 nffr"™-~-^-n rr Kose China Tea Set, Dinner Set, 

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 or Webster's Dictionary. Forfull particulars address 



J. GR 



31 Sixth Avenue, New York, 



Established 1852. 



Microscope Stands, 

 Oil Immersion Object- 

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 and Histological work, 

 of Objectives, Camera 

 Lucida and other ac- 

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IMPROVED OIL LIGHT 



MAGIC LANTERNS. 



Also Lime and Electric Light Apparatus, and 



mechanical, plain, and fine colored views. 



J. B. COLT & CO., Manufacturers, 



No. 16 Beekman Street, New York. 



EAELE & CO. 



SUCCESSORS 10 



B. & J. BECK, 



1016 Chestnut Street, Phila. 



Microscopes and all 

 Accessories and Ap- 

 paratus. Photograph- 

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 graphic Apparatus and 

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Spectacles, Eye 

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Illustrated Price List 

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E. &. H. T. ANTHONY & CO. 



591 Broadway, N.Y. 

 Manufacturers and Importers of 

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Apparatus and Supplies of every 

 description. Sole proprietors of 

 the Patent Detective, Fairy Nov- 

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 great variety, from $9.00 u pwa rd. 



Amateur Outfit: 



Send for Catalogue^or call and 

 than 40 years established in this line of b' 



