SCIENCE, 



[Vol. XV. No. 366 



Sprague Blectric Railiiray and Motor Company. 



Bearings Self Oiling. 

 NON-SPARKING IN OPERATION. 



Lightest Weight Consistent with 

 Highest Efficiency. 



SIMPLE IN CONSTRUCTION. 

 Not Liable to get out of Order. 



Commutator Wear Reduced 

 to a Minimum. 



16 and 18 BROAD STREET, NEW YORK. 



CAUGRAPH 



GREATEST SPEED ON RECORD!! 



T. W. Osborne wrote 179 Tvords in one 

 single minute on the CAL.IGKAPH, tike 

 Cliantp 



Macliine of tlie World. 



G. A. Mc-Bride wrote 139 words in a single 

 minnte, BHndfoIderi^ llins in eacli case 

 proving tlie falsity of many of tlie state- 

 ments of onr competitors. 



For full and correct account ( 



of above test, address 



THE AMERICAN WRITING MACHINE CO., 



BARXFORD, C09il«. 



BRANCH OFFICES :-237 Broadway, N. Y. ; 

 14 W.4th Street. Cincinnati, O. ! 1003 Arch 

 Street, Philadelphia. 



PLAIN AND PRINTED 



NDIA PONGEES, 



CORAHS. 



These celebrated fabrics are uii- 

 exrcclled for Avear and durability, 

 and tliis season's printings are of 

 unusual merit in their color and 

 design. 



^SdtooidwcLU c& l^ti? dt. 



NEW YORK. 



CALIFORNIA SPECIMENS. SEND 

 TEN CENTS for a price list and beauti- 

 ful sample on card. Bird-skins, eggs, minerals, 

 plants, shells, etc. Address, A. C. Sullivan, 

 1 154 14th Street, San Diego, California. 



Spring Dress Goods for 1890. 



We have just placed on sale fifty cases o 

 medium and rich Dress Goods for Spring and 

 Summer, bemg the initial opening in this De- 

 partment, 



An early inspection is invited. 



JAMES McCREEEY & CO. 



BROADWAY AND ELEVENTH STREET, 



NEW YOBK. 



ESTERBROOK'S 

 STEEL PENS. 



OF SUPERIOR AW STANDARD QUALITY. 

 Leading Nos.; 048, 14, 130, 135, 239, 333 



For Sale by all Stationers. 



THE ESTERBROOK STEEl PEN CO., 



ffiWorlsa : Oamden, N.J. ^6 John .*>t.. New york. 



THE HIGHEST AWABD OF A GOLD MEDAL 

 at the PARIS EXPOSITION was secured by the 



r 



REMINGTON 



STANDARD TYPEWRITER, j-^ Ms^ 



which has been for FIFTEEN YEARS THE STANDARD, 



and Embraces the Latest and Highest Achievements of Inventive Skill. 



WYCKOFF, SEAMANS & BENEDICT, 327 BROADWAY, NEW YORK. 



CHANCE FOR ALL 



To Enjoy a Cup of Perfect 

 Tea. A TRIAL ORDER ot ?}4 



pounds of Fine Tea, either Oolong, Ja- 

 pan, Imperial, Gunpowder, Young Hy- 

 son, Mixed, English Breakfast or Sun 

 Sun Chop, sent by mail on receipt of 

 S2.00. Be particularand statewhatkind 

 of Tea you want. Greatest inducement 

 e\ er offered to get orders for our cele- 

 Coffees and Baking Powder. For full particu- 

 THE GREAT AMERICAN" TEA CO. 

 9. 31 and 33 Vesey St. , New York. 



MINERALS. SirSb^'-ge-et'^fi" 



the connoisseur, as well as cheaper specimens for the be- 

 ginner and the student. We also make a specialty of 

 minerals by weight for Blowpipe Analysis We have re- 

 cently received fine specimens of Drusy Quartz on Chrys- 

 ocolla, from Globe, Arizona; Malachite and Azurite, 

 Bisbee, Ariz. ; Lettsomite, very rare, Ariz. 5 Millerite, 

 Antwerp, N.Y. ; modified Quartz crystals, Alexander 

 Co., N.C. ; etc., etc. Complete Catalogue free. 



ENGLISH & CO., Dealers in Minerals. 

 X512 Chestnut St., Philadelphia, Pa. 



GEO. 



5 & H. T ANTHONY & CO. 



591 Broadway, N.Y. 

 Janufacturers and Importers ot 

 PHOTOSRAPHIC INSTRUMENTS, 

 s and Supplies of every 

 description. Sole proprietors of 

 the Patent Detective, Fairy Nov- 

 el, and Bicycle Cameras, and the 

 Celebrated Stanley Dry Plates, 

 great variety, from $g.oo upward, 

 ; or call and examin " 

 established in this line of business. 



