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Packard's Entomology for Beginners. For the use of Young Folks, 

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Guide to the Study of Insects, and a Treatise on those Injurious 



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Outlines of Comparative Embryology. By A. S. Packard. Copi- 

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Remsen's Chemistries. See American Science Series. 



Scudder's Butterflies. By Samuel H. Scudder. x -|- 322 pp. i2mo. 



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Brief Guide to the Commoner Butterflies. By Samuel H. Scudder, 



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The Life of a Butterfly. A Chapter in Natural History for the 



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Underwood's Our Native Ferns and their Allies. With Synoptical De- 

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Williams's Elements of Crystallography. By George Huntington 

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Williams's Geological Biology. An Introduction to the Geological 

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Woodhull's First Course In Science. By John F. Woodhull, Pro- 

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/. Book of Experiments, xiv -|- 79 pp. 8vo. Paper. <^oc. ^fiet. 

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Zimmermann's Botanical Microtechnique. Translated by James Ellis 

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