270 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



F. — Enemies and fatalities. 



30. What enemies interfere with or destroy the spawn or the young 

 fish ; do the parent fish devour them ? 



31. Are crabs, worms, lampreys, or other living animals found attached 

 to the outside, or on the gills, or in the mouth, especially the roof of the 

 mout'd ? 



32. To what extent do they suffer from the attacks of other fish or 

 other animals — as sharks, blue-fish, i)orpoises, &c. ? 



33. Has any epidemic or other disease ever been noticed among them, 

 such as to cause their sickness or death in greater or less numbers ? 



G. — Capture. 



34. What kind of nets are used in the capture of this fish ? 



35. What are the dimensions (length and depth) of the nets used ? 



36. What kind of vessels are employed and what is the tonnage ? 



37. What is the number of men required for the management of ves- 

 sel and nets ■? 



38. What part of each day is employed in fishing ? 



39. Are the fish taken more on one tide than another ? 



40. Does the wind have an effect on them ? 



41. What is the number of vessels employed in your vicinity and what 

 is the aggregate number of their crews ? 



H. — Economical value and application. 



42. What disposition is made of the fish caught ; whether used on 

 the spot or sent elsewhere ; and, if so, where ? 



43. What oil factories are there iu your neighborhood and by whom 

 owned ? 



44. What is the gross quantity of oil manufactured in a year at each 

 factory ? 



45. What is the productive capacity for oil-manufacture of each fac- 

 tory in each year ? 



46. What is the description and cost of machinery used in trying-out 

 oil in each factory 1 



47. What prices were paid per barrel for fish in 1873 and what in 

 X)revious years ? 



48. What is the average quantity of fish required to produce a gallon 

 of oil ? 



49. What quantity of oil can be obtained from one ton of scrap 1 



50. What is the least amount of oil per barrel of fish and when is it 

 least ? 



51. What is the greatest amount of oil per barrel and when is it 

 greatest ? 



52. Do the Northern fish yield more than Southern ? 



63. What is the history of the oil-manufacture on this coast ? 



