No. 6. The Ancient Basket Makers of Southeastern Utah. By George H. Pep- 

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No. 7. The Butterflies of the Vicinity of New York City. By William Beuten- 

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No. 8. The Sequoia. A Historical Review of Biological Science. By George H. 

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No. 9. The Evolution of the Horse. By \V. D. M.\tthe\v, Ph.D., Associate Cura- 

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No. 10. The Hawk-moths of the Vicinity of New York City. By Willi.am Beltex- 

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No, II. The Musical Instruments of the Incas. By Charles W. Me.\d, Assistant 

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No. 12. The Collection of Fossil Vertebrates. By W. D. Matthew, Ph.D., Asso- 

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No. 13. A General Guide to the American Museum of Natural History. January, 

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No. 14. Birds' Nests and Eggs. By Frank M. Chapman, Associate Curator of 

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No. 16. The Insect-galls of the Vicinity of New York City. By William Beuten- 

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No. 17. The Fossil Carnivores, Marsupials and Small Mammals in the American 

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No. 18. The Mounted Skeleton of Brontosaurus. By W. D. Matthew, Ph.D., 

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No. 21. The Development of a Mollusk. By B. E. Dahlgren, D.M.D., American 

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