RUSCHENBERGEH'S SERIES. 



FIRST BOOKS 



OF 



NATURAL HISTORY, 



IOR SCHOOLS, COLLEGES, AND FAMILIES. 



1. ELEMENTS OP 



ANATOMY AND PHYSIOLOGY. 



2. ELEMENTS OP 



MAMMALOGY, 



The Natural History of Quadrupeds. 



3. ELEMENTS OF 



OKNITHOLOGY, 



The Natural History of Birds. 



4. ELEMENTS OF 



HERPETOLOGY AND ICHTHYOLOGY, 



The Natural History of Reptiles and Fishes. 



5. ELEMENTS OF 



CONCHOLOGY, 



The Natural History of Shells and Mollnsca. 



6. ELEMENTS OF 



ENTOMOLOGY, 



The Natural History of Insects. 



7. ELEMENTS OF 



BOTANY, 



The Natural History of Plants. 



8. ELEMENTS OF 



GEOLOGY, 



The Natural History of the Earth's Structure. 



This interesting series of books has already met with the most 

 flattering reception ever extended to any work issued from the Amer- 

 ican press. Introduced into the Public Schools of Pennsylvania, and 

 in nearly all the first class seminaries of learning in the United States. 



