260 



BULLETIN OF THE BUREAU OF FISHERIES 



tions. The difference in the location of the breeding centers of the two species, 

 however, makes this impossible, for, as will be shown, the drift that carries cod eggs 

 out along the south side of Massachusetts Bay brings haddock eggs in from the north 

 and east. As the spawning center of the haddock is in the outer part of the bay, the 

 percentage of cod eggs in early cleavage about Plymouth would be expected to far 

 exceed the haddock, which probably would be in later stages when they reached 

 that point. Similarly, the percentage of haddock eggs containing early embryos 

 should outnumber the cod. Table 5 shows the abundance of eggs in the bay on 

 April 21, at the height of the haddock season. A single surface haul with a foot 

 net at station 18A yielded 8,148 eggs. No such quantities of cod eggs ever were 

 found either at Plymouth or Ipswich. 



ITINERARY 



Fourteen cruises in all were made and 38 stations visited from December 3, 

 1924, to June 17, 1925. (See Table 1.) 



Starting from Minot's Light, off Boston Harbor (station 17), the stations extended 

 completely around the arm of Cape Cod as far as Provincetown, and from there 

 across the bay to Boston, with three stations on Stellwagen Bank. (Fig. 4.) Later 

 stations were added over the deeper parts in the center of Massachusetts Bay (sta- 

 tions 18, 18A, and 19), a line run along the north shore (stations 29 to 38), and a line 

 across the entrance from Cape Ann to a point off Highland Light (stations 30 to 34). 



Table l.—"Fish Hawk" stations, November 12, 1924, to June 17, 1925, Massachusetts Bay 



Station 



I. .. 

 2... 

 3... 

 4... 

 5... 

 6... 

 6A. 

 7... 

 8... 

 9... 

 10.. 



II. . 

 11A 

 12.. 

 13.. 

 13A 

 14.. 



Latitude 

 (north) 



42 01 



42 12 



42 09 30 



42 06 



42 01 



41 55 30 



41 56 00 



41 49 15 



41 49 



41 53 15 



41 58 



41 59 30 



42 00 00 

 42 01 15 

 42 03 



42 02 30 



42 05 



Longitude 

 (west) 



70 34 



70 23 30 



70 19 30 



70 17 



70 12 



70 9 30 



70 18 30 



70 11 30 



70 24 30 



70 27 



70 30 15 



70 31 30 



70 32 15 



70 33 



70 34 30 



70 34 00 



70 35 



Station 



15.. 

 16.. 

 17.. 

 18.. 

 18A 

 19.. 

 29.. 

 30.. 

 31.. 

 32.. 

 33-- 

 34.. 

 35.. 

 36.. 

 37.. 

 38.. 



Latitude 

 (north) 



15 



00 



42 09 30 



42 14 



42 18 



42 18 30 



42 16 54 



42 22 



42 38 



42 38 00 



42 30 30 



42 23 30 



42 15 30 



42 07 45 



42 34 30 



42 30 15 



42 28 00 



42 24 15 



Longitude 

 (west) 



70 38 15 



70 41 



70 44 



70 32 30 



70 30 30 



70 38 



70 33 30 



70 25 15 



70 20 30 



70 15 30 



70 10 30 



70 06 30 



70 38 00 



70 43 15 



70 48 00 



70 52 15 



Table 2. — "Fish Hawk" stations, November 12, 1924, to June 17, 1925, Ipswich Bay 



Station 



Latitude 

 (north) 



Longitude 

 (west) 



Station 



Latitude 

 (north) 



Longitude 

 (west) 



20 



O t ft 



42 44 00 

 42 46 00 

 42 47 45 

 42 49 30 

 42 50 30 



o / // 



70 36 45 

 70 40 

 70 43 30 

 70 40 00 

 70 43 30 



25 



0 / // 



42 52 00 

 42 53 30 

 42 54 30 

 42 56 00 



70 40 00 

 70 43 00 

 70 40 00 

 70 41 45 



21 



26 



22 



27 



23 



28 



24 





It was originally planned to cover the area every week during the spawning sea- 

 son, and between December 3 and December 23, 1924, four trips were made. How- 



