BIOLOGY LIBRARY 



( f> _ * o 



COPYRIGHT, 



'',/ '' ',,'', \ 5887, 

 ,,Sx O. M.'E.UNHAM. 



ALL RIGHTS KESERVED. 



CHKOMO-LITHOGRAPHKD BY DONALDSON BROTHERS, NEW YORK. 

 PRESS W. L. MERSHON & Co., RAHWAY, N. J. 



