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AGRICULTURAL GAZETTE. 



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28, UPPER GOWER-STREET. and 27. IVY LANE, 







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PATERNOSTER ROW, LONDON. 







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DARLEY.'S 





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SCIENTIFIC LIBRARY 

























SCHOOLS, PRIVATE STUDENTS, ARTISTS, 









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POPULAR GEOMETRY; 







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ClpleS ' Br GEORGE DA RLE Y, A.B. 













( Mir-V GOOSE FEATHERS, Is. "per lb. — Bed 































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COMPANION 







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POPULAR ^GEOMETRY ; 



Contribution. Till be ft«*l 























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By GEORGE DARLEY, A.B. 



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A SYSTEM 







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POPUL AR°ALGEBRA; 

















A Section on PROPORTIONS and 









PROGRESSIONS. 







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By GEORGE DARLEY, A.B. 















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POPULAR TRIGONOMETRY, 







Both Plane and Spherical. 



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Application of Algebra to Geometry. 









Bt GEORGE DARLEY, A.B. 







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FAMILIAR ASTRONOMY. 



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Bt GEORGE DARLEY, A.B. 





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