OCR Text |
Show 744 MR. F. DAY ON THE FISHES [Dec. 2, Species. Red Mullet Red Gurnard Piper Mackerel Dorv Cod, over 5 lb Whitine Whiting Pout Pollack, over 41b Hake Turbot Brill Whiff Plaice Dab Lemon Dab Sole Lemon Sole Conger 1873. 27 61 222 1 84 95 "9 1 4 51 51 86 1874. 11 13 118 4 124 10 13 4 147 147 56 1876. 1 176 20 24 95 4 110 5 14 170 32 33 22 15 16 7 199 56 13 19 250 7 22 1877. 4 210 18 29 54 1 2 4 4 306 6 19 23 115 29 7 582 77 8 43 289 9 29 1878. 1 57 12 59 78 108 5 4 114 12 43 is 47 34 2 374 54 5 51 403 7 43 1879. 2 1 7 71 178 9 "27 3 310 8 11 2 14 57 92 4 1032 326 20 38 683 2 6 If we divide the fishes captured in the years 1878 and 1879 into families, we find as follows :- 1878. 1879. Mullidse 1 2 Sparidse 57 1 Triglidse 149 265 Carangkhe 113 28 Gadidae 188 348 Pleuronectidse .. .. 977 1954 Mursenidse 43 6 One cause which has great bearing upon tbe presence or absence of certain kinds of fish is, as already observed, the temperature of the sea. The following figures from Lord Ducie's notes show what was the average temperature at the surface daily at 7 A.M. :- 1878, July 63 August.. 61*8 1879, „ .... 53*5 „ .. 56-8 Consequently in July 1879 we find the temperature of the air was 4°*5 lower than the average of the mean temperature for the last twenty years, and of the surface-water of the sea 9°*5 less than in 1878 ; while in August the mean temperature of tbe air was 2°*0 less than the average for the last twenty years, and of the surface-water of the sea 5° lower than in 1878. O n July 21, 1878, at 12.30 A.M., the temperature of the sea is thus recorded:-At surface, 71°; at 1 fathom, 67°*5 ; 2 fathoms, 66° |