AMERICAN 



Natural History series. 



VOLUME I. 



Ferns in their Homes and Ours. 



By J. Robinson, Professor of Botany, Massachusetts Horticul- 

 tural Society. With eight chromo-lithographs of rare ferns and 

 many other plates and illustrations. i2mo. Cloth. $1.50. 



VOLUME II. 



The Structure and Habits of Spiders. 



By J. H. Emerton. Fully illustrated. i2mo. Cloth. $1.50. 



OTHERS TO FOLLOW. 



