372 



William C. Schroeder 



Table VII 

 The average temperatures in °F for various depths in the four sub-areas with the 

 number of stations or hauls shown in parentheses 



temperature between the two were seldom greater than 0-5°. It is of interest to note, 

 also, that the results listed above agree very closely with those obtained in the same 

 region, in summer, by the Blake, Fish Hawk and Albatross in the 1880's. 



As we are concerned here chiefly with conditions along the Atlantic slope, within 

 the region explored, as it pertains to the bottom-dwelHng fishes and other marine hfe, 

 it seems evident that the temperatures at or near bottom, between 200 and 730 

 fathoms at least, are very uniform. And while this applies to June-July, the few 

 readings obtained by the Albatross in February-March 1920 between Long. 64° 

 and 68° W in 200-700 fathoms are in close agreement. 



So far as the role of temperature, per se, is concerned with the presence and abun- 

 dance of these fishes living beyond 200 fathoms, conditions appear to be very stable, 

 and it would not be surprising if the results thus far obtained, with due consideration 

 to the type and efficiency of the gear employed, would be found to be approximately 

 the same for any season or year. Only further exploratory work can reveal whether 

 or not this is so. 



REFERENCES 



BiGELOw, Henry B. and Schroeder, William C. (1939), Notes on the fauna above mud bottoms 



in deep water in the Gulf of Maine. Biol. Bull., 76 (3), 305-324. 

 BiGELOw, Henry B. and Schroeder, William C. (1953), Fishes of the Gulf of Maine. Fish. Bull. 



lA, Fish and Wildlife Serv., 53, 1-577. 

 BiGELOw, Henry B. and Schroeder, William C. (1954), Deep water Elasmobranchs and Chimae- 



roids from the northwestern Atlantic Slope. Bull. Mus. Camp. ZooL, Harvard Coll., 112 (2), 



37-87. 

 BiGELOW, Henry B. and Schroeder, William C. (1955), Occurrence off the middle and north 



Atlantic United States of the offshore hake Merluccius albidus (Mitchill) 1818, and of the blue 



whiting Gadus (Micromesistius) poutassou (Risso) 1826. Bull. Mus. Camp. ZooL, Harvard Coll., 



113 (2), 205-226. 

 BiGELOw, Henry B., Schroeder, William C. and Springer, Stewart (1953), New and little known 



sharks from the Atlantic and from the Gulf of Mexico. Bull. Mus. Camp. ZooL, Harvard Coll., 



109 (3), 213-276. 

 Martin, W. R. (1954), Redfish ecology in the Gulf of St. Lawrence. In: Fish. Res. Bd., Canada, 



Kept. Atlantic Biol. St a. for 1953, 61-64 (unpublished manuscript). 

 Steele, D. H. and Martin, W. R. (1955), Redfish ecology in the Gaspe area. In: Fish .Res. Bd., 



Canada, Rept. Atlantic Biol. St a. for 1954, 63-65 (unpublished manuscript). 



