MARINE BIOLOGICAL LABORATORY. 



Received ?r.?..?T 



Accession No. .?.520 



Given by Br # P#R# L ilii« 



Place, u.nty.er.s.lty ...of ....ChicagQ 



*»* No book or pamphlet is to be removed from the Lab- 

 oratory without the permission of the Trustees. 



