NO. 3 



SMITHSONIAN EXPLORATIONS, I915 



53 



As in previous years records on the birds observed on the Florida 

 Keys and the southern portion of the peninsula were kept, and these 

 observations have been published in the Year Book No. 14 of the 

 Carnegie Institution for 1915, pages 197-199. The past two years 

 have yielded a list of 76 species to which 13 were added this year, 

 bringing the total list of birds noted to date to 89. 



Fig. 68. — Sooty terns (Sterna fnscata) on their nesting grounds. Bird Key, 



Tortugas. 



BIOLOGIC STUDY OF CHESAPEAKE BAY 

 In October, 1915, the I'nited States Bureau of Fisheries began 

 a hydrographic and biologic study of Chesapeake Bay. The work 

 being carried out under the direction of Mr. Lewis RadclilTe with 

 the aid of the Fisheries steamer Fish Hazvk. 



Two cruises were made in 191 5. On the first, which extended 

 from October 25 to October 28, Mr. Wm. B. Marshall, assistant 

 curator, division of marine invertebrates, represeiited the National 

 Museum, while on the second, which covered the period from Decem- 

 ber 2 to 6, Mr. Clarence R. Shoemaker of the U. S. National Museum 



