SCIENCE. 



in 



Electrical Batteries for Medical Purposes. 



: JHE ^Vy^TEFJN J^LECTF(IC ^ANUFy\CTUF[IJSq £o. 



CHICAGO, 



NEW YORK, 



Manufacturers of and Dealers in 



STATIONARY GALVANIC BATTERIES, PORTABLE HIGH 

 ELECTROMOTIVE FORCE BATTERIES, CHLORIDE 

 OF SILVER BATTERIES, GALVANO-CAUTERY 

 BATTERIES, FARADAIC BATTERIES, POCKET 

 BATTERIES, BATH APPARATUS, AND 

 ELECTRODES, 



EDISON'S 



ie Pen & Duplicating Press, 



^n ^xtremely JJseful Jnvention 



Electric 



Dr. Butler's Plumbago Rheostat, 



PLIABLE SPONGE ELECTRODES, &c. &c. 



DUPLICATING WRITTEN OR PRINTED MATTER. 



CATALOGUES ON APPLICATION. 



8,000 Copies from a Single Writing, at the Rate of 400 an Hour. 



Address all Orders to 



Western Electric Man'fg Co. 



38 Union Square, 

 — NEW YORK — 



CITY. ^PRH 



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

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



10,000 fens now in JJse and tfye pemand £teadily Jncreasing ! 



No. 3, $35.00 



No. 1, $25.00 ; 



No. 2, $30.00 ; 



Full 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. 



j3§3 Over 100,000 now in use. 



Put. Nov. 16, 1569, Oct. 15, 1>7S. 



Patent Pending. 



The Latest Improvement 



consists 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 

 first purchrscd. We, therefore, recom- 

 mend parties at a distance (instead cf at- 

 tempting to get the Filter rc-packed) that 

 they should purchase a new filter crock, 

 the cost of which is moderate, and no 

 more than the cost of repacking. 



ORNAMENTAI, STVI,E. 



No. 71, Pore lam Reservoir, 4^ quarts $7.25 each. 



'' 7 2 - 7'A " 9- 2 5 " 



73. 11 1100 " 



M 74, " " 16 " 13.00 " 



75, " 26 " 1550 " 



The Original and Genuine. 



ALL OTHERS ARE IMITATIONS. 



Acknowledged the only complete Filter 

 \nd Cooler in the world. 



JEWETT'S 



POPTABLE CROCK 



F ILT E R 



WITH PORCELAIN-LINED 



COOLER. 



This is the only Filter having the Pat- 

 ent Removable Filtering Cup attached, 

 which holds all sediment that would oth- 

 erwise pass into the filter. 



Th s celebrated Filter will take river, 

 3 lake, pond, rain or other impure water, 

 ar.d render the same of 



Sparkling 1 Transparency 



and Purity. 



STAINKD OAK, 



No. 61, Porcelain Reservoir, 4}^ quarts. 

 " 62. " 7 % 



" 63, " " 11 " 



" 64, " 16 " 



" 65, " " 26 " . 



$6.75 each. 



8.75 ;• 

 10.50 



X2.50 u 



15.00 " 



READ THE TWO MOST CONVINCING TESTIMONIALS. 

 Isaac S. W'LLIAMS & Co., 72^ Market Street, Philadelphia, Pa. — We have sold your "Patent Water Filter" for the last svz years. Our sales 

 m that time having reached upwards 01 five thousand, and in no instance h^vc we heard ot any failure in performing all you claim for them. 



BOARD OF HEALTH, Washington^ D. C.,Aug. a 7 , 1877. 

 WEBB &. BrjVEBIDGS:— 1 am j'.ist in receipt of your favor of yesterday, requesting my opinion of the 'Jewett Filter" purchased of you sev- 

 eral months ago it my personal use, and am pleased to say that it h is fully answered your expressed estimate of its value. As a cleanser and 

 purifier of drinking water it i*. certainW not excellea by any mechanical arrangement known to me. The FOREGOING REMARKS apply equally 

 '<.- -nil-; LARGE Filter ok the samj make purchased FOR the Board of Health. 



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



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



«OR Rale in New York City BY KIN 1 '',. BRIOGS & CO., so6 Broadway. J. II BALDWIN & CO., 21 Murray Street. L. HEYNIGER, 

 i3 Fultoi Street. CHARLES JONES, ojo Broadway. LEWIS cS: CONGRK, 6o. Sixth Avenwe. 



