No. 4.— Exploration of the Coast Water between Nova Scotia and 
Chesapeake Bay, July and August, 1913, by the U. S. Fisherwes 
Schooner Grampus. Oceanography and Plankton. 
By Henry B. BIGELow 
CONTENTS. 
PAGE. 
Itinerary 5 ‘ : ; i ; ; : : £52 
Equipment and ee : : : ‘ 4 ‘ : ; . 154 
Oceanography : : : : . SG 
Temperature, Cape Cod to Ghasapeake ley z : : =) SS 
Temperature in the Gulf of Maine . ; : ¢ : > hae 
Salinity, Cape Cod to Chesapeake Bay . : : ‘ RES | 5) 
Salinity in the Gulf of Maine . : 200 
Density, at the temperature in situ, Cape Cod to Pie penkes Be 214 
Density in the Gulf of Maine . L : : . : SY 3221 
Color of the sea , ; , ' ; } : ; .' 224 
Surrent measurements , ; : M225 
Circulation over the continental shelf, “Ju 1913 f : 230 
Previous records of temperature and roe og Cod to Chess 
peake Bay ; 234 
Oceanography of the Gulf ms Vries in “the summers af 1912 a 
1Od3. 4 3 : : ; ; ‘ ‘ : . 246 
Origin of the coast ett : ) : so" 250 
Oceanography of the Gulf of Maine La of the North ce : 2 200 
The coast water as a biological environment . : : . 264 
The plankton ‘ : ; : : ; ‘. | 5267 
General account of the mitnonliaiien ; ; , : sit) e267 
Gulf of Maine plankton , ; : ; : ; i; Deere 
Distribution of Salpa and eababien : ‘ : ; . ih 2 
The hyperiid amphipods ‘ ’ : ‘ t { : stihueee 
Table of hyperiids ‘ : ; : : : : aoe 
Copepods . ; , ‘ .. 285 
Table of Piocheds: in the farivental Bats : : feiss | 
The Sagittae ‘ ; : ‘ : : : - eT 
Tomopteris . : ‘ : : ‘ : ‘ ok TO 
Pteropods and hevsrenads : } : : iy S01 
Pelagic hydroids . : é J 14806 
Medusae, siphonophores and ‘cxedcplicre’ i f { 00314 
Distribution of pelagic coelenterates . : ; ; | ets 
