SCIENCE. 



Vol. .XIV. No. 356 



Sprague Electric Railway and Motor Company. 



Lightest Weight Consistent with 

 Highest Efficiency. 



SliVIPLE IN CONSTRUCTION. 



Not Liable to get out of Order. 



Bearings Self Oiling. 

 NON-SPARKING IN OPERATION. 



Commutator Wear Reduced 

 to a Minimum. 



16 and 18 BROAD STREET, NEW YORK. 



Royal Armure Plaids. 



A new line of all-wool Royal Armure Plaids, 

 just arrived, are commended to purchaser for 

 beauty of design a.id coloring, width 48 inches, 

 price $2 per yard, 



A large variety of Serge and Foule Plaids at 

 75 cents and $1 per yard. 



We would also direct attention to remarkable 

 valu3S in Robes and Pattern Dresses 'patterns 

 worth $27.50 and $25, may be P' _^f'^^^.' '"f 

 $17.50 and $16. '^'"'^i^^ 



iC> 



OyDtnoU)^ 



THE 



UmitVtalne CAJ> Ud 



I TNUERWE4E.— Scotch Lambs' Wool, Camels' 

 L' Hair, Natural Wool, Cachmere, llerlno, Bal- 

 brlggau and Pure Silk Underwear for Ladles, 

 Gentlemen and Children. 



" CARTWRIGHT A: AVARNER'S" 



CELEBRATED MERINO UNDERWEAR. 



T ADiaS' UNION DRESSES— In Silk, Slili and 

 L/ Wool, and Merino. 



HGSIERY.-Pure Sills, Raw Silk, Camels' Hair, 

 Cachmere and Fieece-lmed Hose and Half- 

 Hose. 



''If J - o 



JAMES McCREERY & CO. 



BROADWAY AND ELEVENTH STREET, 



NEW YOBK. 



:'^^ 



NEW YORK. 



HOUSEHOLD MICROSCOPE 



Sent to any address for $5.00 



This instrument is simply for 

 u^e by a beginner in Microscopy. 

 The finer Microscopes vary in 

 value from $25. to $250. Send 

 fjr catalogue lo 



G. S. WOOLMAN, 



116 FULTOX ST., 

 New York. 



fFor Chemical Manufacturers,) Sold at 

 MINERALS, i For Blowpipe Analysis, V L"""' ?"ces 



(For Technical Purposes, ) By weight. 

 Most varied and complete stock of fine cabinet speci- 

 mens i'l U. S Recent additiors include fine Fluorite, 

 Calcte, Bante. Specular lion, etc., from England ; Ber- 

 trandite, Phenacite, Descloizite, Brochanti'.e, Vanadinite, 

 Copper Pseudomorphs after Azurite, etc., from U. S 

 Send for complete catalogue free. 



GEO. I. ENGLISH &. CO , Dealers in MineiaU. 

 1512 Chestnut St . Philadelphia, Pa 



FOOD 

 ADULTERATION 



And its Detection. With photomicrographic plates and 

 a bibliographical appendix. By J P. Eattershall 32S 

 pages, 8vo, cloth. Price, S3. 50. Circulars and Catalogues 

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



i2Cortlandt St.,New York. 



H. Wunclerlicli & Co., 



868 BROADWAY, 



NEW YORK, 



Invite special attention to ilieir latest 

 importations of Modern Etchings En 

 gravings, Brown's Carbon Photographs 

 and Watercolor Paintings, a'so to their 

 large collection of Rare English Mezzo- 

 tints, Fancy Subjects by Bartolozzi, 

 old L'ne Engravings, and Original 

 Works by Rembrandt, Durer, and other 

 old masters. 



COMPANY. 

 95 MILK ST„ BOSTON, MASS. 



Tlii.s Company owns tbe Letters 

 Patent granted t'j Alexander Gra- 

 ham Bell, March 7th, 1876, No. 

 174,465, and January 30, 1§77, 

 No. 186,7§7. 



The Transmission oT Speech by 

 all known forms of L^LECTRIC 

 SPEAKING TELEPHONES in- 

 fringes the right secured to this 

 Company by tlie above patents, and 

 renders each individual uier of tel- 

 ephones, not furnished by it or its 

 licensees, responsible for .*uch un- 

 lawful use, and all the conse- 

 queiTces thereol and liable to snit 

 therefor. 



ESTERBROOK'S 

 STEEL PENS. 



OF SUPERIOR AND STAffDARD QUALITY. 

 Leading Nos.; 048, 14, 130, 135, 239, 333 



For Sale by all Stationers. 



THE ESTERBROOK STEEl PEN GO., 



Works : Oamden, N. J. -^6 Jollll St.. »w York. 



■ff, 



^ IN THE WORLD. C 



:goldmedal? 







Repairs Everything. 



IlssuLLess bas brought a lot of 

 nitators copMneua in evLry way 

 os^ible Remerj.ber that THE 

 VL^ rENUI^ELeP.aee'sLiquid 

 Glue 13 minufaUured solely by the 



RUSSIA CEMENT CO. 



CLOLCESTER, MASS. 

 Send 10c and dealers' card who 

 >e3n t ktji'p i' iQ atock. foraanoplg. 



