CONTENTS. 



Page. 



Introduction 7 



Plan and method of investigation 8 



Review of literature of the food of fishes 9 



The smooth dogfish 10 



Characters and distribution 10 



Breeding habits 11 



Food 11 



Examination of digestive tracts .. 11 



Estimate of destructiveness 14 



Feeding habits 15 



The sand shark 16 



General characters 16 



Food 16 



Examination of digestive tracts 16 



Estimate of destructiveness 18 



The horned dogfish 18 



General appearance and habits 18 



Distribution and abundance 19 



Feeding habits 20 



Variety of food 21 



Destructiveness • 21 



The summer skate 23 



Characters of the fish 23 



Reproduction . 24 



Uses 24 



Food 25 



Examination of digestive tracts 25 



Estimate of destructiveness 27 



The common killifish : 27 



General appearance and distribution 27 



Food 28 



Examination of digestive tracts , 28 



The cunner 30 



Characters and distribution 30 



Uses 30 



Food 30 



Examination of digestive tracts 31 



Possible destructiveness 34 



The toadfish 34 



General appearance, abundance, and habits 34 



Food 35 



Examination of digestive tracts 35 



Estimate of destructiveness 36 



5 



