SCIENCE. 



[Vol. XIV. No. 358 



Spragne £lectric Railivay and Motor Company. 



Bearings Self Oiling, 

 Crff f*^ VI '^I:. NON-SPARKING IN OPERATION. 



Lightest Weight Consistent with 

 Highest Efficiency, 



SIMPLE IN CONSTRUCTION, 



Not Liable to get out of Order. 



Commutator Wear Reduced 

 to a Minimum. 



16 and 18 BROAD STREET, NEW YORK. 



H. Wunderlich & Co., 



868 BROADWAY, 



NEW YORK, 



Invite special attention to tlieir latest 

 importations of Modern Etchings, En- 

 gravings, Brown's Carbon Photographs 

 and Watercolor Paintings, also to their 

 large collection of Rare English Mezzo- 

 tints, Fancy Subjects by Bartolozzi, 

 old Line Engravings, and Original 

 Works by Rembrandt, Durer, and other 

 old masters. 



CHANCE FOR ALL 



To Enjoy a Cup of Perfect 

 Tea. A TRIAL. ORDER ot ?}4 



pounds of Fine Tea, either Oolong. Ja- 

 pan, Imperial, Gunpowder, Young Hy- 

 son, Mixed. Englisu Breakfast 



of Tea you 



e^eroflVredi _ „ 



brated T'-as, Coffees and EaUnp Powder. For full particu- 

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 P. O. Bos 2S9. 31 and 33 Vesey St., New York. 



FOOD 



ADULTERATION 



And its Detection. With photomicrographic plates and 

 a bibliographical appendix. By J. P. Battershall. 328 

 pages, 8vo, cloth. Price, $3.50. Circulars and Catalogues 

 on application. E. & F. N. SPON, 



12 Cortlandt St., New York. 





^INTHEWORLD. ta^ 



toDMEDAL^ 



Used h-\ thouB^nds of first-clasa 

 lethanics and b^ such manufact- 

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Repairs Everything. 



Its success has brought a lot of 

 mt it ">r3 i-op^ ing us id every way 

 OS ible Remember that THE 

 |>LY GENUINE LePase's Liquid 

 Glue is manuEattured solely by the 



RUSSIA CEMENT CO. 



GTOUCESTER, MASS. 

 Send 10(, -rnd dcalera' card who 

 ipsn t keep 1* in stOLk. for sample. 



N 



O OTHER Life Policies as liberal cost as little 



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 money, as those of ^ 





THE lK?iVELERS 



OF FIARTFORD, CONN., 



Best either for Family Protection or Investment of 

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