IN ADDITION TO THE PAPERS BY DOCTOR NORTHROP, THE VOLUME 

 CONTAINS AN ACCOUNT OF THE FLORA AND NARRATIVE OF THE 

 BAHAMA TRIP BY MRS. NORTHROP ; A REPORT ON THE CRUSTA- 

 CEANS OF THE COLLECTION, CONTRIBUTED BY PROFESSOR WILLIAM 

 H. RANKIN OF PRINCETON UNIVERSITY ; A REPORT ON THE ACTINIA, 

 CONTRIBUTED BY PROFESSOR J. PLAYFAIR McMURRICH OF THE UNI- 

 VERSITY OF TORONTO, FORMERLY OF CLARK UNIVERSITY ; A LIST OF 

 THE SHELLS, AS DETERMINED BY PROFESSOR WILLIAM H. DALL OF 

 THE UNITED STATES NATIONAL* MUSEUM ; AND A DESCRIPTION OF 

 ICTERUS NORTHROPI BY PROFESSOR J. A. ALLEN OF THE AMERI- 

 CAN MUSEUM OF NATURAL HISTORY. OF THE BOTANICAL COLLEC- 

 TIONS, THE MARINE ALG^ WERE DETERMINED BY MR. FRANK S. 

 COLLINS OF MALDEN, MASSACHUSETTS, WHILE THE ACCOUNT OF 

 THE PALMS WAS CONTRIBUTED BY DR. O. F. COOK OF THE DE- 

 PARTMENT OF AGRICULTURE AND THE UNITED STATES NATIONAL 

 MUSEUM. 



OTHER ASSISTANCE AND COOPERATION IS DULY NOTED IN THE 

 SEPARATE PAPERS THROUGHOUT THE BOOK. 



V 



