238 SCIENCE OF FISHING. 



"siscowet" is another species of lake trout. It is found 

 principally in Lake Superior. Next to lake herring, lake 

 trout is the most valuable species taken in the Great Lakes. 

 The bulk of the lake trout catch is taken with gill nets, 

 others with lines, pound and trap nets. 



LOBSTER -The lobster, a crustacean of great economic 

 importance, is found on the Atlantic Coast from Delaware to 

 Labrador. It averages about 11 inches in length and about 2 

 pounds in weight, but the size varies with localities and 

 seasons. It is caught in pots and traps especially con- 

 structed for the purpose. 



MACKEREL The mackerel is found in the North Atlantic 

 south as far as Cape Hatteras. It ranges from '9 to 18 

 inches in length and from one-half to 3 pounds in weight, 

 and is caught in purse seines, pound nets, weirs, gill nets, etc., 

 and with hook and line. 



MENHADEN The menhaden is a fish of the herring 

 family, found along the Atlantic seaboard from Maine to 

 Florida. It is known by a great many local names, some 

 of them being "pogy", "hard-head", "bony fish", "-bunker", 

 "cheboy", "alewife," "oldwife", "fat-back", "shiner", etc. 

 The average weight of the menhaden is from two-thirds of a 

 pound to one pound. They are caught in purse seines, gill 

 nets, set nets, and weirs. Their economic importance is due 

 mainly to the oil and guano which are produced from them ; 

 they are also used as bait for mackerel, cod, halibut, haddock 

 and sea bass. The menhaden is the most abundant fish 

 found anywhere in the waters of the United States and forms 

 one of the principal fishery products. Menhaden approach 

 the coast waters upon the advent of warm weather and 

 remain until the water cools. They are seen as early as 

 March in Chesapeake Bay, but not until much later in the 

 northern waters. Purse and haul seines are the principal 

 forms of apparatus of capture; pound nets, gill nets and 

 trap nets are also used. 



