152 bulletin: museum of comparative zoology. 



Quantitative hauls in the Gulf of Maine 326 



Microplankton 330 



Gulf of Maine plankton, 1912 and 1913 335 



Macroplankton of the Gulf of Maine, and of the northeastern 



Atlantic 338 



Table of stations, nets used, and depths of hauls in fathoms . . 342 



Table of temperatures, salinities, and densities ..... 344 

 Table of surface temperatures, taken by W. W. Welsh, between Cape 



Cod and Cape Maj' 350 



Salinities of water-samples collected by Capt. McFarland . . . 351 



Bibhography 352 



Plates 



ITINERARY. 



OcEANOGRAPHic and plankton studies were carried on by the Gram- 

 pus during the summer of 1913 from Nova Scotia to Chesapeake Bay. 

 The success of the cruise was largely due to the skill with which Mr. 

 W. W. Welsh, of the Bureau of Fisheries, handled the oceanographic 

 apparatus. It is a pleasure to acknowledge the assistance of Dr. 

 C. O. Esterly for identifying the copepods; Dr. H. J. Hansen the 

 schizopods; Dr. C. McLean Eraser the hydroids; Mr. W. F. Clapp 

 the heteropods, pteropods, and Salpae, and to Capt. John McEarland 

 of the schooner Victor for taking tows and water-samples. 



We sailed southward from Gloucester on July 7; occupied the first 

 station off Cape Cod, and then ran across the northwest part of 

 Georges Bank to Nantucket light-ship, to commence the first line 

 to the Gulf Stream. Some thirty miles southward from the light-ship, 

 floating patches of Gulf weed, and the brilliant blue color of the 

 water showed that we were approaching the Stream; but the sea 

 and wind were rising so rapidly meanwhile, that we made the station 

 at the outer edge of the shelf. And even as it was, the nets were 

 badly torn, though water-bottles and thermometers were handled 

 successfully. The wind continued to rise during the afternoon and 

 evening, and by the time we had sailed northward again as far as the 

 40 fathom curve, there was a very heavy sea running. Nevertheless 

 by using a hemp rope, instead of the wire, for the large plankton net, 

 the work (Station 10062) was carried out without mishap. 



From Station 10062 we turned off shore again, occupying the 

 second Gulf Stream station 80 miles south of Montauk Point, at the 

 500 fathom curve. 



