LANTERN SLIDES 

 and PROJECTION 



For Nature- Study and Science Teachers 



Our Bookl( 

 PROJECTION 

 FOR SCIENCE 

 TEACHERS 6c 

 LECTURERS. 



^^^____^_^_____^_^___________^___ in addition to 



observations on 



projection, contains descriptive matter and lists of Fifteen 



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over 4000 illustrations. 



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