FISHES OF THE GULF OF MAINE 



425 



So far as we can learn few if any cod spa^vn on the sandy bottom along the 

 outer shores of Cape Cod, but great numbers of ripe fish congregate in Massachusetts 

 Bay on well-defined grounds 3 to 10 miles offshore, extending from abreast of 



71* 70° 



Fig. 212. — Chief spawning grounds of cod in the western side of the Gulf of Maine 



Sandwich (some 12 miles south of Plymouth) to Minots Light. A few breed on 

 various small rocky patches off Gloucester. Years ago many cod also spawned 

 over a small area off Boston Lighthouse and thence northward toward Bakers 



