146 INDEX. 



PAGE 



Current, . . . . 88-90 



Death of old scallops 79 



Decline of industry, . . 106, 107 



Deformities 95 



Dennis, . . . . . ' . 100, 104 



Development table, . . . . . . . . . ' . 135,136 



Diatoms, . . . . . . . . . . 65 



Digestive system : 



Anatomy, ....... . 17 



Development, . . . . . . . . . . 46, 47 



Veliger, .... .35 



Dissocoiich stage, . . . . . . ' . . . 36-39 



Distribution, . . . , . 12 



Dredges, .... 109, 110 



Dredging, . . . . . . . . i . . . 108-110 



Drew, Prof. G. A., . . . . . . . . 10, 11, 13, 18, 27, 58 



Drifting, . . . 60, 61 



Edgartown, . . . 83, 85, 103, 104 



Eel grass, . . . .88, 89, 91 



Egg: 



Description, . . . . . . . . . . 19 



Development, . . . . . ; . . . . 27, 28 



Method of counting, . . . 126, 127 



Embryological methods, . . . . . . . . . . 125-130 



Embryology, . . . . 27-31 



Enemies, ..... . 67-73 



Enteromorpha, .......... 13 



Environment, . . . . . .... . 87-92 



Excretory system, . . . . . . . ... 17, 18 



"Eye," . .... Ill, 116, 117 



Eyes: 



Anatomy, . . . 15, 16 



Development, ...... . 44 



Fairhaven, ... . i v . .... 101, 104 



Fallacies, ... 73 



Falmouth, 102 



Family, ... . 11, 12 

 Fecundation: 



Natural, 25,26 



Self, 26 



Feeding habits, . 65, 66 



Fertilization: 



Artificial 129, 130 



Self, ... 26 



Two-year-old scallops, .... . . 26, 27 



Fishery, .... . 107-112 



Methods of improving, ... . . 124, 125 



Fishing grounds, ... ...... 97103 



Flagellum, ........... 30 



Food value . 113-117 



Foot: 



Anatomy, ....... . 18 



Development, ........ 46 



Footed larva, ........ . 34 



Gastrula 29 



