ffl^S^ 



NCE 



New Series. 

 Vol. VIII. No 18 



Friday, August 5, 1898. 



Single Copies, 15 cts. 

 Annual Subsckiption, $5.00 



General Electric Co/s 



FLUOROSCOPES 



Platlno^cyanide of Barium, or Tungstate of Calcium Screens. 

 NFW X-PAY TiTRp WITH AUTOMATIC 



i>iL<yv yv-ivrv I i *jl>l, vacuum requlator. 



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LONG-LIVED. 



ROENTGEN RAY APPARATUS of all kinds. 



Catalogue No. 9050. 



Candelabra, Miniature and Decorative Lamps. 



Catalogue No. 9044. 



Elisoit Becoiatlve aoii miniature Lamp Depaitmeiil, 



(GENERAL ELECTRIC COMPANY,) 



HARRISON, N. J. 



The BEEOHER MODELS of 

 TRILOBITES and BRAOHIOPODS 



are the only satisfactory means of showing the complete 

 forms of these animals. Illustrated circulara concerning 

 each will be, sent on application. 



Ward's Natural Science Establishment, 



ROCHESTER. N. Y. 



THIRD VOLUME, COMPLETING THE WORK, JUST READY! 



" " " OF THE NORTHERN UNITED STATES AND CANADA, 

 VIRGINIA TO KANSAS INCLUDED. 



By Professor NATHANIEL L. BEITTON and Hon. ADDISON BROWN, 



With the assistance of Specialists in Various Groups. Every known species illustrated, numbering J102. In three Imperial 

 8to volumes of about 620 pages each. The .set $9.00, transportation extra. 



Those already having Volumes Land II. can secure Volume III. for $3.00, special net; postage 36 cents extra. 



Volume I., Ferns to Carpet Weed. Volume II., Portulaca to Gentian. Volume III., Dogbane to Thistle. Volume III. 

 contains a General Key to the Orders and Families, a Glossary, and Latin and English Indices to the three volumes, 

 including about io,ooo popular names. The Indices are also supplied separately in a uniform index volume of 84 pages 

 at $1.00 net, postage 9 cents extra, 



" The appearance of this third volume marks the completion of the most important botanical treatise issued in America 

 since the completion of Gray*s Manual. Every species is shown in pictures as well as described, and the result is a work 

 which must henceforth be indispensable to students of botany." — The Congregaiionatist. 



CHARLES SCRIBNER'S SONS, 153-157 FIFTH AVENUE, NEW YORK. 



