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Austin's Observation Blanks in Mineralogy. Gives detailed studies of 35 com- 

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Ballard's The World Of Matter. A. guide to the study of chemistry and mineralogy; 

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Clark's Practical Methods in Microscopy. Gives in detail descriptions of meth- 

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Clark's HOW tO find the Stars. Helps to an acquaintance with the constellations. 47 

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Guides for Science Teaching. Teachers' aids in the instruction of Natural History 

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Richard's first Lessons in Minerals. 50 pages. Paper. 10 cts. 



Bowditches Physiology. 58 pages. Paper. 20 cts. 



Clapp's 36 Observation Lessons in Minerals. 80 pages. Paper. 30 cts. 



Phenix's Lessons in Chemistry. 20 cts. 

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Shaler's First Book in Geology. 272 pages, illustrated. 



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