UNTERN SUDES 

 and PROJECTION 



For Nature-Study and Science Teachers 



Our Booklet, 

 PROJECTION 



FOR Science 

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 Lecturers, 



observations on 



projection, contains descriptive matter and lists of Fifteen 



Sets of Educational Slides — more than 800 slides and 



over 4000 illustrations. 



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Chicago 



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The American Botanist 



If there is anything you want to knov/ aboui 

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 More than three thousand articles on every 

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 Eighteenth volume begins February 1912. 

 75 cents a year. A complete set for $9.00. 

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