No. 11.— THE .MUSICAL INSTRUMENTS OF THE INCAS. By C. W. Mead, 

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No. 13.— A GENERAL GUIDE TO THE AMERICAN MUSEUM OF NATURAL 

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No. 14.— BIRD'S NESTS AND EGGS. By Frank M. Chapman. Associate 

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No. 16 — THE INSECT-GALLS OF THE VICINITY OF NEW YORK CITY. 

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(Reprinted from The American Museum Journal.) 



No. 17 — THE FOSSIL CARNIVORES, MARSUPIALS. AND SMALL MAM- 

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No. 18 — THE MOUNTED' SKELETON OF BRONTOSAURUS. By W. D. 

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