SCIENCE. 



in 



Electrical Batteries for Medical Purposes. 



^HE <\YE£TEF(N J^LECTFjIC ^ANUFyVCTUFflJNQ £o 



CHICAGO, 



NEW YORK, 



Manufacturers of and Dealers in 



STATIONARY GALVANIC BATTERIES, PORTABLE HIG 

 ELECTROMOTIVE FORCE BATTERIES, CHLORID 

 OF SILVER BATTERIES, GALVANO-CAUTERY 

 BATTERIES, FARADAIC BATTERIES, POCK 

 BATTERIES, BATH APPARATUS, AN 

 ELECTRODES. 



EDISON'S 



Electric Pen & Duplicating Press, 



^n £xtremely jJseful Jnvention 



Dr. Butler's Plumbago Rheostat, 



PLIABLE SPONGE ELECTRODES, &c, &c. 



PLICATING WRITTEN OR PRINTED MATTER. 



CATALOGUES ON APPLICATION. 



000 Copies from a Single Writing, at the Rate of 400 an Hour. 



Address all Orders to 



Western Electric Man'f g Co. 



38 Union Square, 

 — NEW YORK 

 CITY. 



U is successfully used by Schools, Colleges, Banks, Commission Houses, Mercantile Firms, Lawyers, 

 linisters, Copyists, and every person or firm desiring a number of duplicates of any document. 



10,000 fens now in JJse and thje pemand £teadily jncreasing ! 

 No. 1, $25.00 ; No. 2, $30.00 ; No. 3, $35.00. 



Description and Samples of Work sent on Application. 



EDISON'S ELECTRIC PEN AND PRESS, 



38 Union Square, New York City. 



JEWETT'S 



Portable Crock Filter. 



/'.((. N„v. ]('., 1S69, ('■!. 1"., l!i"8. 



Patent Pending. 



The Latest Improvement 



con-ists in placing the filtering material 

 in a separate vessel or crock. The ad- 

 vantage being this, viz ; 



That whenever the filter part gives 

 out, a new crock can be obtained, which 

 will make the whole complete as when 

 irst purchased. We, therefore, recom- 

 mend parties at a distance (instead cf at- 

 tempting to get the Filter re-packed) that 

 I they should purchase a new filter crock, 

 the cost of which is moderate, and no 

 more than the cost of repacking. 



ORNAJIENTAI, STVI.E. 



No. 71, Porcelain Reservoir, 4^ quarts 



The Original and Genuine. 



ALL OTHERS ARE IMITATIONS. 



Over 1 00,000 now in use. 



Acknowledged the only complete Filter 

 \nd Cooler in the world. 



JEW ETT ' S 



PORTABLE CROCK 



FILT E R 



WITH PORChXAlN-LINED 



C O O L E R . 



This is the only Filter h»ving the Pat- 

 e t Removable Filtering Cup attached, 

 uhic'.; holds all sediment that would oth- 

 erwise pass into the filter. 



Ths celebrated Filter will take river, 

 akc, pond, rain or other impure water, 

 a::d render the same of 



Sparkling Transparency 



and Purity. 



754 



$7.25 each. 

 0.25 ' 

 11.00 " 

 13.00 " 

 15.50 ' 



STAINi:i) OAK. 



No. 61, Porcelain Reservoir, ,\% quarts. 



" 62. " 7 l A " - 



63, ' " II " . 



" 64, 16 " 



" 65, '• 26 " . 



$6.75 each. 



8.75 " 

 10.50 



12.50 " 



15.00 " 



READ THE TWO MOST CONVINCING TESTIMONIALS. 



I 1AAC S. Williams & Co., 728 Market Street, Philadelphia, I'a.-We have sold your "Patent Water Filter" for th« last s« years. Our sales 

 in that time having reached upwards of five thousand, and in no instance have we beard of any failure 111 performing all you claim for them. 



BOARD OF HEALTH, Washington^ D. C.,Aug. 97. 1877. 

 WEBB & I I am just in receipt "f your favor of yesterday, requesting my opinion of the '"Jewett Kilter" purchased of you sev- 



eral months ago I. r rny personal use, and am pleased to say that it his fully answered your expressed estimate: of its value. lean er and 



purifier of drinking water it is certainlv not excelled by any mechanical arrangement known to inc. 'I'm 1 REMARKS APPLY 1 QUALLV 



T" 'mi. 1 KB PURI HASED KOR THE BOARD Oi- HEALTH. 



Very respectfully ycurs, CHRIS. C. COX, M. D. 



Manufactured only by JOHN C. JEWETT & SONS, Buffalo, New York. 



For Bale in Nkw Yokk ClTK BY KING, BRIGGS & CO., 596 Broadway. J. H. BALDWIN & CO., 21 Murray Street. I.. HEYNIGER, 



18 Fultoi Street. CllARl.ES JONES, 920 Broadway. LEWIS & CONGER, 601 Sixth Avcnwc 



