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CHRONOLOGY AT A GLANCE : An Epitome of Events 

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X>UDGEON, R. E., M.D. 



THE HUMAN EYE ; Its Optical Construction Popu- 

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X)UNCAN, JAMES, E.L.S. 



INTRODUCTION TO ENTOMOLOGY. With 38 

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DYER, Rev. T. F. THISELTON, M.A. 



ENGLISH FOLK LORE. C(i«/«zfj .'—Trees— Plants- 

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THE FERNS OF NORTH AMERICA. Illustrated 

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EDGEWORTH, M. P., F.L.S., F.A.S. 



POLLEN. Illustrated with 438 Figures. Second Edition, 

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