SCIENCE. 



111 



Electrical Batteries for Medical Purposes. 



CHICAGO, 



NEW YORK, 



Manitacturers 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, 



fin pxhemely jJseful Jnvention 



Dr. Butler's Plumbago Rheostat, 



'LIABLE SPONGE ELECTRODES, &c, &c. 



PLICATING WRITTEN OR PRINTED MATTER. 



CATALOGUES ON APPLICATION. 



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



Address all Orders to 



Western Electric Man'fg Co. 



38 jJnion Square, 

 — NEW YORK 



CITY. ^p 



K is successfully used by Schools, College?, Banks, Commission Houses, Mercantile Finns, Lawyers, 

 Ministers, Copyists, and every person or firm desiring a r umber 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 



Description and Samples of Work sent on Application. 



EDISON'S ELECTRIC PEN AND PRESS, 



38 Union Square, New York City. 



3J3 



JEWETT'S 



Portable Crock Filter. 



nu. .V..,-. :■ 



Patent PeNDIM 



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 pari 

 out, a new crock can be obtained, winch 

 will make the whole complete as when 

 first purchased. We, therefore, recom- 

 mend parties at a distance (instead c f at- 

 tempting to get the Filter rc-packi d) that 



■is 



they should purchase a new (liter trork, 

 the cost of which is moderate, and no 

 more than the cost of repacking. 



ORNAMENTAL STVXE. 



71, P rvoir, 4 % quarts 



7/2 



.. S7.25 each. 

 -- a.25 '* 



. . 11.00 " 



. 1 .00 il 



The Original and Genuine. 



ALL OTHERS ARE IMITATIONS. 



Over 1 00,000 now in use, 



wledged the or.ly complete Fiiiei 

 ,r.d Cooler in the world. 



JEWETT'S 



I'OrTABLE CROCK 



FILTE 



WITH PORCELAIN-LINED 



COOLER. 



This is the only Filter h«ving the Pai- 

 ert Removable Filtering Cup attached, 

 which holds all sediment that would oth- 

 erwise pass into the filter. 



Th : s celebrated Filter will take river, 

 akc, pond, rain or other impure water, 

 and render the same of 



Sparkling Transparency 



and Purity. 



STAINED OAK, 



No. 61, Porcelain Reserve 



" 62. 



" 63, " 



" 64, " 16 



" 65, " " 26 



r, ^4 qu :r:s 



7'A 



$6.7? each. 

 ? 75 - 

 10.50 

 12.50 " 



15.00 '" 



READ THE TWO MOST CONVINCING TESTIMONIALS. 



& Co., 72! Market Street, Philadelphia, Pa. — We have sold your "Patent Water Filter" for the last sis years. Our sales 

 reached upwards o! five thousand, and in no instance have we heard of any faiimc m performing all you claim for them. 



'.I.TH, Washingt* n, D. C.^Aug. a 7 , 1877. 

 '.;:: — I am just in receipt of your f.ivor of yesterday, requesting my opinion of the '' (ewctt Filter" purchased 'of you sev 

 - mv personal tm pleased to say that it has fully answered your < | n it ol ii valui a cleanser and 



. water it 1 . ccrtainlv not excelled by any mechanical arrangement known to me. The porecoi remarj jm bqi 'ally 



•< THE IK OF THE SAME MAKE PURCHASED l OK THE BOARD Ol Hi i in 



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



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



ew York City bv KING, BRIGGS & CO., 16 Broadway. ]. II. BALDWIN & CO., 21 Murray Street. L. IIKVNIGER, 

 18 1 ulto.i Street. CHARLES JONES, 0.0 Broadway. LEWIS & CONGER, 601 Sixth Avenwe. 



