84 Fisheries of the Gulf of St. Lawrence^ 



and its mean intensity during the cold term was about 5° degrees 

 of intensity in term of Volt as' Electrometer, No. 1. 



The indications of the Psychrometer at these low temperatures, 

 appears somewhat remarkable and perhaps defective, the Ice 

 coated Bulb, indicated at the lowest temperature a little more 

 than a degree higher then the dry bulb, and this continued so with a 

 decreasing temperature, hut as the temperature gradually rose the 

 ice coated bulb indicated as usual a lower temperature then the 

 dry bulb,— which would lead to the supposition that at thes; 

 extreme cold points, the ice formed rather a sheath or covering 

 over the bulb and prevented the uniform and gradual contractions 

 for decrease of temperature consequent on evaporation in the 

 mercurial column, corresponding to the dry bulb, and it was also 

 observed that the ice coated bulb was not so easily affected by 

 slight increase of temperature as generally takes place at more 

 moderate indications. 



I have not seen the fact noticed, and would call the attention 

 of observers to this point, but these remarks are only applicable to 

 the extreme cold temperatures above noticed, and of which we 

 have had hitherto so few examples. 



St. Martin, Isle Jesus, C. E., 

 March 1, 1859. 



ARTICLE VI. — Report on the Fisheries of the Gulf of Saint 

 Lawrence. By H. M. Perley, Esq., Her Majesty's Emi- 

 gration Officer at Saint John, N.B. 



(Continued from our last.) 



THE MACKEREL. 



The common Mackerel (Scomber scombrus) abounds in the 

 Gulf of St Lawrence, and is one of the chief objects of pursuit 

 with the numerous fleets of American fishing vessels, which are 

 to be found yearly in every part of the Gulf. The Americans 

 begin fishing for Mackerel, in the Gulf, on the first of July, and 

 finish at the end of September ; but the resident fisherman might 

 begin this fishing earlier, and continue it until the very close of 

 the season. 



Mr. MacGregor describes the Mackerel of the Gulf as being of 

 much finer flavour than those caught on the shores of Europe. 



It has been generally supposed that the Mackerel was a fish of 

 passage, performing certain periodical migrations — making long 



