

Some of Oqr Lists 



Agriculture 

 An. Morphology 

 Alg^e & Fungi 

 Birds & Their Food 

 General Botany 

 Entomology 

 Evolution 

 Native Ferns 

 Nature Study 

 Plant Ecology 

 Plant Morphology 

 Play Grounds 

 Portraits 

 Public Parks 

 Trees & Forests 

 Wild Flowers 



Lantern Slides 



-AND- 

 PROJECTION APPARATUS 



30 SETS ON 30 SUBJECTS 



100.000 OF OUR SLIDES IN USE 



Educational Slides Our Specialty 



Send for decriptive lists. If you will send 

 your name and official position, and state the 



subject in which you are interested, we .will 

 place your name on our mailing list and send 

 you literature from time to time. 



PROJECTION FOR SCIENCE TEACHERS AND LECTURERS 

 Is a booklet 'of 76 pages containing descriptive lists "'of slides and appa- 

 ratus and it will^be sent to teachers and lecturers who make the request, 

 giving name and official potition plainly written. Please refer to this ad. 



Conrad Slide and Projection Co. 



4028 JACKSON BOULEVARD, 



CHICAGO, ILLINOIS 



x 



-x 



Three Valuable Reprints of The 

 Nature-Study Review 



Outline of Nature-Study. G. H. Trafton. 

 Outline of Butterfly Studies. Anna B. Comstock. 

 The Moth Number 



Price 25c each. Quantity price, 20c each 



THE NATURE STUDY REVIEW 



ITHACA, N. Y. 



Kindly mention The Nature-Study Review when replying to advertisements 



•X 



