SCIENCE. 



iii 



JEWETT'S 



Portable Crock Filter. 



Fut. Sim, 16, 1569, Uci. 15, 



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 purchrs-d. We, therefore, recom- 

 n.end parties at a distance (instead cf at- 

 tempting to get the V liter re-packed; that 

 they should purchase a new filter crock, 

 the cost of which is moderate, and no 

 more than the cost of repacking. 



ORNAMENTAI. STYLE. 



xVo. 71, Porcelain Reservoir, 4 \£ quarts $7.25 each. 



? 2 > » 7 K °-*5 



73, 11 " 11.00 



" 74. " " 16 " 13.00 



' 75. " " 26 " 1550 



The Original and Genuine. 



ALL OTHERS ARE IMITATIONS. 



Over 1 00,000 now in use. 



Acknowledged the only complete Filter 

 ind Cooler in the world. 



J E W E TT ' S 



POPTABLE CROCK 



FILTER 



WITH HOKCtLAlN-LINED 



C O O L E R . 



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. 



This celebrated F. Iter will take river, 

 lake, pond, rain or other impure water, 

 and render the same of 



Sparkling Transparency 



and Purity. 



STAINED OAK, 



No. 61, Porcelain Reservoir, 4^ quarts. 

 " 62. " 1 7» '* - 



" 63, " " 11 



" 64, " " 16 " 



" 65, " " 26 " . 



$6.75 each. 

 8-75 " 

 10.50 * 

 12.50 u 

 15.00 fct 



READ THE TWO MOST CONVINCING TESTIMONIALS. 



Isaac S. Williams & Co., 72S Market Street, Philadelphia, Pa.— We have sold your "Patent Water Filter" for the last s : x years. Our sales 

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



BOARD OF HEALTH, Washington, D. C.,Aug. 37, 1877. 

 Webb & Beveriiige: — I am just in receipt of your favor of yesterday, requesting my opinion of the " Jewett Filter" purchased of you sev 

 /ral months ago f< r my personal use, and am pleased to say that it has fully answered your expres>ed estimate of its value. As a cleanser and 

 purifier of drinking water it is certainl" not excelled by any mechanical arrangement known to me. The foregoing remarks APPLY equally 

 •O the large Filter ok the same 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 Sale in New York City by KINO, BRIGGS & CO., w 6 Proadway. J. H. BALDWIN & CO., 21 Murray Street. L. HEYNIGER. 



iS Fultoi Ptre-t. CH XRI.ES JON'ES. o^o Broadwav. LEWIS & CONGFK. (Sot Sixth Avenwe. 



Electrical Batteries for Medical Purposes. 



•J 1 HE ^E^TEF^N |^LECTF(IC ^ANUFy\CTUF}IJ\lQ £o. 



CHICAGO, 



NEW YORK, 



Manufacturers of and Dealers in 



STATIONARY GALVANIC BATTERIES, PORTABLE HI 

 ELECTROMOTIVE FORCE BATTERIES, CHLORIDE 

 OF SILVER BATTERIES, GALVANO-CAUTE 

 BATTERIES, FARADAIC BATTERIES, POCK 

 BATTERIES, BATH APPARATUS, AND 

 ELECTRODES. 



Dr. Butler's Plumbago Rheostat, 



PLIABLE SPONGE ELECTRODES, &c, &c. 



EDISON'S 



Electric Pen & Duplicating Press, 



fin fxtremely Useful Jnvention 



DUPLICATING WRITTEN OR PRINTED MATTER. 



CATALOGUES ON APPLICATION. 



Address all Orders to 



Western Electric Man'fg Co. 



38 Union Square, 

 — NEW YORK — 

 CITY. ^ 



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



li is successfully used by Schools, Colleges, Banks, Commission Houses, Mercantile Finns, 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. 1, $25.00; No. 2, $30.00; No. 3, $35,00 



Fuil Description and Samples of Work sent on Application. 



EDISON'S ELECTRIC PEN AND PRESS, 



38 Union Square, New York City. 



