Copyright, 1888, 

 BY ALEXANDER AGASSIZ. 



All rights reserved. 



[Published by permission of CARULE P PATTERSON and JDLIUS E. UILGARD, 

 Superintendents U. S. Coast aud Geodetic Survey.] 



The Riverside Press, Cambridyr : 

 Hectrotyped and Printed by II. 0. Iloughton & Co. 



