Three Years in the Pacific: Containing Notices of Brazil, Chile, Bolivia, Peru, &c. in 1831, 1832, 1833, 1834, Volume 2

Ruschenberger's Series. First Books of Natural History. Elements of Anatomy and Physiology (of Mammalogy ... Ornithology ... Herpetology ... Ichthyology ... Geology.) ... From the Text of Milne Edwards and A. Comte. With Plates: Volume 2

Elements of Entomology: Prepared for the Use of Schools and Colleges

A Notice of the Origin, Progress, and Present Condition of the Academy of Natural Sciences of Philadelphia

Ruschenberger's Series. First Books of Natural History. Elements of Anatomy and Physiology (of Mammalogy ... Ornithology ... Herpetology ... Ichthyology ... Geology.) ... From the Text of Milne Edwards and A. Comte. With Plates: Volume 8

Elements of Herpetology, and of Ichthyology: Prepared for the Use of Schools and Colleges

A Voyage Round the World: Including an Embassy to Muscat and Siam in 1835, 1836, and 1837

Ruschenberger's Series. First Books of Natural History. Elements of Anatomy and Physiology (of Mammalogy ... Ornithology ... Herpetology ... Ichthyology ... Geology.) ... From the Text of Milne Edwards and A. Comte. With Plates: Volume 5

A Sketch of the Life of Dr. Gouverneur Emerson

A Memory

An Address: The Claims of the Academy of Natural Sciences of Philadelphia to Public Favor

Ruschenberger's Series. First Books of Natural History. Elements of Anatomy and Physiology (of Mammalogy ... Ornithology ... Herpetology ... Ichthyology ... Geology.) ... From the Text of Milne Edwards and A. Comte. With Plates: Volume 6

Remarks on the Condition of the Marine Hospital Fund of the United States: With Suggestions for Its Improvement

A Brief History of an Existing Controversy on the Subject of Assimilated Rank in the Navy of the United States

A Sketch of the Life of Joseph Leidy

Invertebrate animals. Botany: the natural history of plants. Geology: the natural history of the earth's structure

Elements of Natural History: Embracing Zoology, Botany and Geology : for Schools, Colleges and Families, Volume 1

Reptiles and Fishes ...

Ruschenberger's Series. First Books of Natural History. Elements of Anatomy and Physiology (of Mammalogy ... Ornithology ... Herpetology ... Ichthyology ... Geology.) ... From the Text of Milne Edwards and A. Comte. With Plates: Volume 4

Ruschenberger's Series. First Books of Natural History. Elements of Anatomy and Physiology (of Mammalogy ... Ornithology ... Herpetology ... Ichthyology ... Geology.) ... From the Text of Milne Edwards and A. Comte. With Plates: Volume 4