6 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



E. Dangers and fatalities— Continued. Page- 



(6) Destruction of mature fish 62 



By fish 62 



By porpoises 63 



By whales 63 



By seals and otters 63 



By birds 63 



( "Ja nncts and cormorants 63 



Other species 63 



By reptiles 64 



Alligators, in Florida lagoons 64 



By fishes 64 



All fish predaceous 64 



Driving of menhaden aud mackerel by bluefish 64 



Catfish, goosefish 65 



Sharks, dogfish 65 



(c) Parasites: animal; vegetable 66 



Entozoa 66 



Epizoa -- 66 



(d) Epidemics 66 



Mortality in the Gulf of Mexico 66 



2. From man - ^- 66 



(a) Obstructions (see above) 67 



(b) Poisoning (refuse, &c.) 68 



(c) Capture and incidental destruction 68 



3. Natural causes or changes 68 



(«) Volcauic eruptions 68 



Hot water 68 



Acid or poisonous emanations 68 



Mud 68 



(b) Storms 68 



Mud and wind 68 



Bay of Fundy - 



Tides and currents 68 



(c) Cold and heat 68 



Auchor-ice - 69 



Northers 70 



Gulf of Mexico 70 



4. Causes of accumulation of fish in fossil state 71 



Monte Bolca 72 



5. Epidemic or other diseases 72 



F. Natural food 72 



1. Vegetable 72 



(a) Diatoms aud desmids 73 



(b) Alga 1 , turtles, shells 73 



(c) Sea plants 73 



(d) Floating wood: Mangroves, posts, &c 73 



Consumed by Teredo 73 



Limnoria 73 



Mollusks 73 



Echini * .... 73 



Grand Manan .. 73 



2. Organic mud 74 



Menhaden • - — - 74 



Gizzard shad ;...*.... m.± ..<.* 74 



