Copyright, 1888, 

 BY ALEXANDER AGASSIZ. 



All rights reserved. 



[Published by permission of CARLILE P PATTERSON and JULIUS E. HILGABD, 

 Superintendents U. S. Coast and Geodetic Survey.] 



The Riverside Press, Cambridge : 

 Klectrotyped and Printed by H. O. Houghton & Oo. 



