FOR NATURE-STUDY 



.. THE NEW.. 



Reflecting Lantern 



Opens up a new field for nature- 

 study work in the class room. 

 With it can be shown on the screen 

 in natural colors, pressed flowers 

 and plants, butterflies, moths and 

 other like specimens, crystals, etc. 

 Sketches, photos and engravings 

 from books are also shown with 

 great brilliancy. 



Radium and Radio-Activity 



A new Book by Dr. Charles Baskerville. 



A full account of the latest and most important developments in the 

 field of radio-active substances. 



Cloth Bound. Profusely illustrated. Postpaid $i.io. 



BARGAIN LIST OF NATURE-STUDY MATERIAL ON APPLICATION 



WILLIAMS, BROWN & EARLE 



Dept. J5 9J8 Chestnut St., Philadelphia 



For INature=Study Work : 



The teacher who would have at command a good fund of interesting 

 facts about plants should have a full set of The American Botanist. 

 This magazine is devoted principally to publishing quaint, curious and 

 remarkable items about plants and plant processes. Sample free. Sub- 

 scriptions, $i.oo a year. A set of the nine half-yearly volumes sent for 

 ^4.00. Order today. Address 



WILLARD N. CLUTE & CO., Binghamton, N. Y. 



