Part 6.— MOLLUSCA. 

 Section 1.— OYSTERS. 



CONTENTS. 



Page. 



Bibliographies 238 



General 238 



Physiology 238 



Nutrition 238 



Growth 238 



Food 238 



Environmental factors 239 



Currents and tides 239 



Density 239 



Oxygen requirements. . . . 239 



Salinity 239 



Temperature 240 



Pathology and pathological condi- 

 tions 240 



Diseases and pests 240 



Mortality 240 



Pollution 240 



Enemies 240 



Abnormal coloration 241 



Green 241 



Red 242 



Embryology 242 



Anatomy 243 



Culture 243 



General 243 



United States 244 



General 244 



Alabama 244 



Alaska 244 



California 244 



Connecticut 244 



Delaware 244 



Florida 244 



Georgia 245 



Louisiana 245 



Maryland 245 



Massachusetts 245 



Mississippi 245 



New Jersey 245 



New York". 245 



North Carolina 246 



Rhode Island 246 



South Carolina 246 



Texas 246 



Virginia 246 



Washington 246 



Pacific coast 246 



Europe 247 



General 247 



Belgium 247 



England 247 



51700°— 21 37 



Culture — Continued . 



Europe — Continued. Page. 



France 247 



Germany 247 



Holland 247 



Italy 248 



Netherlands 248 



Norway 248 



Portugal 248 



Spain 248 



Mediterranean 248 



Baltic 248 



Japan 248 



Oceanica 248 



Hawaii 248 



New Zealand 248 



Acclimatization • 248 



Fisheries 249 



General 249 



United States 249 



Alabama 249 



Alaska 249 



CaUfornia 249 



Connecticut 250 



Delaware 250 



Florida 250 



Louisiana 250 



Maryland 250 



Massachusetts 251 



Mississippi 251 



New Jersey 251 



New York 251 



North Carolina 251 



Rhode Island 251 



South Carolina 251 



Texas 251 



Virginia 251 



"Washington 252 



Atlantic coast 252 



Middle Atlantic 252 



New England 252 



Pacific coast 252 



Chesapeake Bay 252 



Europe 252 



France 252 



Italy 253 



Norway 253 



Methods 253 



Preparation and value as food 253 



Laws and legislation 253 



237 



