SCIENCE. 



[Vol. XIII. No. 331 



Sprague Electric Railway and Motor Company. 



mi 



Lightest Weight Consistent with 

 Highest Efficiency. 



SliVIPLE IN CONSTRUCTION. 



Not Liable to get out of Order. 



Bearings Self Oiling. 



NON-SPARKING IN OPERATION. 



Commutator Wear Reduced 

 to a Minimum. 



i6^and iSfBROAD STREET, NEW YORK. 



CALIGRAPH 



MEDAL AWARDED ! 



GREATEST SPEED ON RECORD!! 



126 words per minute, errors excluded. 



T. \V. Osborne, winner of internEitinnal con- 

 test at Toronto, wrote on the CaligrapU Writing 

 Machine 630 words in live minutes, thus gain. 

 ins for the Caligraph the championship of the 

 world. 



30,000 



in 

 Daily Use. 



For full and correct account of above test, address 



THE AMERICAN WRITING MACHINE CO., 



HARTFORD, CONN. 



IVcw Vork Branch, 237 Broadway. 



CoNlETHlNS 



Palenl Pocket Can. N 



tf» 



f;?\ IN THE WORLD. /( 





sTull 



'.ilacf 



■ Co., 



n Organ and Pi; 

 Co., &c., &c. 



Repairs Everything. 



Its success lias brought a lot of 

 nitators copyiogus in every way 

 Dssible. Remember that THE 

 NLY GENUINE LePage's Liquid 

 lue ia manufactured solely by the 



RUSSIA CEMENT CO. 



GLOUCESTER, MASS. 

 Send 10c. and dealers' card who 

 )t;Hrt't keep it in stock, tor Bample. 



KIMBALL'S 



STRAIGHT CUT 



CIGARETTES. 



Unsurpassed in quality. 



Used by people of refined taste. 

 Highest award at Brussels, 1888. 

 The finest smoking mixtures are of 

 ir manufacture. 

 Fifieen First Prize Medals. 

 WM. S. KIMBALL & CO., 



Rochester. N.Y. 



REMINGTON 



STANDARD 



TYPEWRITER 



WON 



Gold and Silver Medals 



POE 



CHAMPIONSHIP OF THE WORLD. 



At Toronto, in open contest, Aug. 13, 1888. 



151 Words per Minute, Without an Error. 



The above is an authentic record made by Mr. Frank E. McGurrin, at Detroit, on Jan. 2i, i88g, 

 on a memorized sentence, thus beating all previous records of correct work, by 30 words per min- 

 ute and placing the "Remington" still further beyond reach of competition. Photographic copies 

 of certified work furnished on application. Wyckoff, Seamans & Benedict, 327 Broadway, N.Y. 



PARIS EXPOSITION. 



The Cheque Bank issues Cheques, either singly or 



put up in Boots, for the special use of VISITORS 



tolhe PARIS EXPOSITIOIV, who can cash the 



me at upwards of seventy Banking Houses, 



\ ^ ^ "-i in diffei'eut parts of Paris, ^n^itlioiit 



'^i/'i '^'^''/J? "'natter can be addressed to them, 

 o. ^^'^/;/^ ^^'ht: ^"lerale, 4 Place de I'Opera, op- 

 posiit- -.-''^^ /;.^ ''/> >?^re English is spokeu. 



Every Cu-^ ^^ oT, , led by the Cheque Bank 

 Is EQUAL TOO -''"ecn^Bank Notea are, for the 

 Bank's Capital, GiXh.^." aq Fund and Customers' 

 Balances are invested In Britisli Govern- 

 ment Securitied, or held in Cash in the Bank 

 of England, and can be cashed in every town In 

 Europe without charge. 



For Handbook containiGg list of '2,5 00 Banking 

 Houses who cash the cheques, /ree of charge^ a-ppiy 

 to 



CHEQUE BANK, Limited, 



Capital, £100,000. Guarantee Fund, £27,000. 

 Trustees, The Right Honorable John Bright, M.P., 

 The Right Honorable Karl Beauchamp. 

 NO, 2 WALL STREET, NEW TORK. 



Visitors to Europe and Paris Exposi- 

 tion should carry a book containing Cheque Bank 

 Cheques, which are absolutely safe and cheaper 

 than Letters oi Credit, and much more convenient; 

 are payable on preeentation n-ithout charge at 2,500 

 Banking Houses and 250 of the principal Hotels in 

 Europe. 



FOOD 

 ADULTERATION 



And its Detection. With photomicrographic plates and 

 a bibliographical appendix. By J. P. Battershall. 328 

 pages, 8vo, cloth. Price, $3.50. Circulars and Catalogues 

 on application. E. & F. N. SPON, 



12 Cortlandt St., New York. 



Readers of Science 



Corresponding with or visiting A dvertisers 

 will cojtfer a great favor by 7neniioning the paper. 



DROP 

 IN THE 

 PRICE 

 * OF 



GRAVITY 



DROP 



ANNUNCIATORS. 



DON'T FORGET THE 



DUST-PROOF BELLS. 



HAZAZER & STANLEY, 



32 Frankfort Street, N. Y. 



GOOD NEWS 

 TO LADIES. 



^SiTatestTmmcement^ver of- 

 fered. Now's your time to get 

 up orders for 



Gold iJiind .Moss Rose Toilet Set, "Watch, Wass LampI 



orAVcbster's Dictionary. For full particulars address 



THK GREAT AMERICAN TEA <T0., 



P. o. Box 289. 31 and 33 Vesey St., New York, 



