SCIENCE. 



[Vol. XXII. No. 557 



Probably you take 



THE 



Electrical Engineer. 



Most people interested in Electricity 



do. 

 If you do not, now is a good time to 



begin. 

 It is publislipd every Wednesday. 

 Subscription, $3.00 per year. 



You can try it three months for fifty 

 cents. 



Address: 



•»The Electrical Engineer, 

 203 Broadway, - - - New York, N.T, 



HANDY BOOKS. 



PRACTICAL ELECTRICS, a universal handy book 

 I on every day Electrical matters, fourth edition. 

 ' ja5 pages, I2VO, cloth, price 75 cents. 

 ELECTRICAL TABLES AND MEMORANDA for 

 Engineers, by Silvanus P. Thompson, 128 pages. 

 Illustrated, 64 mo, roan, to cents. „ , ^^ , 



A SYSTEM OF EASY LETTERING by Howard 



Cromwell, 32 different styles, 50 cents. 

 THE' ORNAMENTAL Penman's pocketbook ot 

 alphabets, 37 different styles, 20 cents. 

 Books mailed post paid to any address on re- 

 ceipt of published price. 



SPON & CHAMBERLAIN, 

 Mention this paper. 12 Cortlandt St., N. Y. 



r 



PennsylYania Bedford Springs Mineral Water 



For Liver, Kidney and B dder Troubles. 



For Gravel, Gall Stones, J aundioe. 



For Dyspepsia, Eheumatism and Gout. 



For Dropsy, Bright 's Disease, Diabetes. 



For Hemorrhoids, Etc. _ii. j »,_ 



It has been used medicinally and prescribed by 

 physicians for nearly one hundred years. , . ^ 



DIRECTIONS:— Take one or two glasses about a 

 half-hour before each meal. 



Case One Dozen Half-Gallon Bottles, $1.50. 



Case Fifty Quarts (Aerated), $7.60. 



Bedford Mineral Springs Co., Bddf«rd, Pa. 



Philadelphia OJBce, 1004 Walnut St. 



Two Stepping Stones 



to consumption are ailments we 

 often deem trivial — a cold and 

 a cough. Consumption thus ac- 

 quired is rightly termed " Con- 

 sumption from neglect." 



not only stops a cold but it is re 

 markably successful where the 

 cough has become deep seated. 



NoTTspaper Clippings. 2S,000 In Stock, 

 nrbat do yoa Tranf? I^et as knoTr. We 

 can snpply yon. The Clemens News 

 Agency, Box 2329^ San Francisco, Cal. 



THE 



DEISARIE SYSTElfl OF ORSTORY. 



A Book of over 600 pages of great value to all 

 Delsartians, teachers of elocution, public speakers, 

 singers, actors, sculptors, pain,;ers, psychologists, 

 theologians, scholars in any department of science, 

 art and thought. 



T^ricCf $2.G0f postpaid, 



EDGAE S. WERNEB,, Publisher, 



10 8 East letli street. - - - New York. 



COMPANY. 

 i25 MILK ST., BOSTON, MASS, 



This Company owns the Letters - Patent 

 No. 186,787, granted to Alexander Graham 

 Bell, January 30th, 1877, the scope of which 

 has been defined by the Supreme Court of 

 the United States in the following terms: 



"The patent itself is for the mechanical 

 structure of an electric telephone to be used 

 to produce the electrical action on which the 

 first patent rests. The third claim is for the 

 use in such instruments of a diaphragm, 

 made of a plate of iron or steel, or other ma- 

 terial capable of inductive action ; the fifth, 

 of a permanent magnet constructed as de- 

 scribed with a coil upon the end or ends 

 nearest the plate; the sixth, of a sounding 

 box as described ; the seventh, of a speaking 

 or hearing tube as described for conveying 

 the sounds ; and the eighth, of a permanent 

 magnet and plate combined. The claim is 

 not for these several things in and of them- 

 selves, but for an electric telephone in the 

 construction of which these things or any of 

 them are used." 



This Company also owns Letters-Patent 

 No. 463,569, granted to Emile Berliner, No- 

 vember 17, 1891, for a combined Telegraph 

 and Telephone, and controls Letters-Patent 

 No. 474,231, granted to Thomas A. Edison, 

 May 3, 1892, for a Speaking Telegraph, 

 which cover fundamental inventions and 

 embrace all forms of microphone transmit 

 ters and of carbon telephones. 



1869. THE XJ.ya. 



Manufacturer and Builder. 



Publisbed Monthly. A handsomely illustrated me- 

 chaninal journal, edited by Dr. William H. Wahl 

 Every number consists ot 48 large quarto pages and 

 cover, filled with useful intormation on all subject; 

 of a practical nature. Specimen copy free. For 

 sale by all newsdealers. Agents wanted every 

 where. Address 



HENRI GERARD, 

 O. Box 1001. 83 Nassan St., N. If 



Scott's Emulsion, is the 

 richest of fat-foods yet 

 the easiest fat food to 

 take. It arrests waste 

 and builds up healthy 

 flesh. 



You Ought to Read 



The Popular Science News and 



Boston Journal of Chemistry. 



Only one dollar till July, 1894. 



A scientific newspaper for unscientific readers. 



Address POPULAR SCIENCE NEWS CO., 



t St.. Boston. MasSi 



LIGHT, HEAT AND POWER. 



THE INDEPENDENT GAS JOURNAL 

 OF AMERICA. 



Published Monthly at Philadelphia. 



Stitscription, %'i.oo Jier year. 



THE WORLD'S FAIR A SUCCESS, BUT 



IT WILL SOON CLOSE ITS GATES 



FOREVER. 



The grandest exhibition of our time aiic 

 possibly for man}' generations to come wil, 

 soon be brought to an end. 



There remains but one month in which to 

 visit this marvelous gathering of all the 

 World's Productions, and everybody should 

 strain a point to go to Chicago. 



The railroad fare heretofore has been con- 

 sidered a hindrance to all classes, but this 

 has all been changed, and on the following 

 days in October the West Shore Railroad 

 will run high-class excursions on its fast ex- 

 press trains in through cars at one-half its 

 lowest fare, i. e,, $17.00, from New York tc 

 Chicago and return, and proportionately 

 lower rates from points along its line. These 

 excursion trains will be in charge of ar 

 agent whose duty it is to care for the inter 

 ests of the company's patrons, en route, tc 

 furnish detailed information as to accommo 

 dations obtainable in Chicago, and to poini 

 out the historic points along the grand old 

 Hudson and through the picturesque 

 Mohawk Vallej'. 



These trains will leave Franklin street. 

 New York, at 10.00 A. M., and West 42d 

 street at 10. 10 as follows ; "Wednesday, Oc- 

 tober 4th; Tuesdav, October loth; Saturday, 

 October 14th; Thursday, October igth, and 

 the last, Monday, October 23d. 



Littell's Living Age, 



THE ONLY WEEKLY ECLECTIC. 



1844. 1893. 



" The Oldest and the Best." 



It selects from the whole wide field of 



EUROPEAN PERIODICAL LITERATURE 



tbe best articles by 



THE ABLEST L.IV5NG WRITERS 



In every department of 



Literature, Science, Politics and Art. 



OPINIONS. 



"Only the best has ever filled its pages; the 

 best thought rendered in the purest English. 

 Nothing poor or unworthy has ever appeared in 

 the columns of The Living Age."— T/te Presby- 

 terian, Phila. 



" Considering its size, it is the cheapest of 

 literary periodicals, and no collection of maga- 

 zine literature is complete without this fore- 

 most of eclectics. "-.EaMcatiomaiCoMran.*, Louis- 

 ville, Ky. 



" It is one of the few periodicals which seem 

 indispensable. ... It contains nearly all the 

 good literature of the time."— TAc Churchman, 

 New York. 



" The fields of fiction, biography, travel, sci- 

 ence, poetry, criticism, and social and religious 

 discussion all come within its domain." — Bos- 

 ion Journal. 



" To read it is itself an education in the course 

 of modem thought and literature." — SuJTaio 

 Commercial Advertiser. 



Published Weekly at S8.00 a year, free of 



'Club Rates. — For $10.15 The LrviNa 

 Age and Science will be sent for a 

 year, postpaid. 

 Rates for clubbing The LryiNQ Age with other 

 periodicals will be sent on application. 



Sample copies of The LrviNG Age, 15 cents 

 each. Address, 



Uttell & Co., 3 1 Bedford St., Boston, Mass, 



