Copyright, 1888, 

 BY ALEXANDER AGASSIZ. 



All rights reserved. 



[Published by permission of CARULE P PATTERSON and JULIDS E. HILGARD, 

 Superintendents U. S. Coast aiid Geodetic Surrey.] 



The Riverside Press, Cambridge : 

 Jflectrotyped and Printed by II. O. Houghton A Oo. 



