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DANA'S GEOLOGICAL STORY BRIEFLY TOLD. An introduction to Geology for the general reader and for 

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DANA'S TEXT BOOK. Revised Edition. A Text-Book of Geology, designed for Schools and Academies. By James D 

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DANA'S MANUAL OF GEOLOGY. Third and Revised Edition, issued in January, 1880. Treating of the Principles of the 

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GRAY'S HOW PLANTS BEHAVE, HOW THEY MOVE, CLIMB, EMPLOY INSECTS TO WORK FOR 



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GRAY'S HOW PLANTS GROW. A Simple Introduction to Structural Botany, with a Populai Flora, or an arrangement and 

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 than 500 engravings. 232 pages. Small quarto. 93 cents. 



Tkis book, in connection with the ' ' School and Field Book, ' ' supplies a complete course in Botanv for Common Schools, Academies, and 

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GRAY'S LESSONS IN BOTANY AND VEGETABLE PHYSIOLOGY, to which is added a copious Glossary o f 

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GRAY'S SCHOOL AND FIELD BOOK OF BOTANY. Comprising the " Lessons in Botany " and " Field, Forest, and 

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This book, in connection with ' ' How Plants Grow, ' ' supplies a complete course in Botan y for Common Schools, Academies, and Seminaries. 



GRAY'S MANUAL OF BOTANY. Arranged according to the natural system, and containing 20 plates, illustrating the 

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THE SAME, bound with "The Lessons." $2.^0. 



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GRAY'S NEW STRUCTURAL AND SYSTEMATIC BOTANY. An Introduction to Structural and Systematic Botany 

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