. Compte-rendu des séances du sixième Congrès international de zoologie, tenu à Berne du 14 au 19 août 1904 ... Zoology. BUND 8ALM0N MIGRATION 699 The next point, that tlie Grilse havo practically left tlie river, is certain. It is proved by the fact that the average weight of the tish has only va- ried 907 grammes and has gone up in the year of largest take instead of decreasing as it always used to do with the largest take. Ail the fisher- men agrée that they hâve caught no Grilse. The tishmongers also say they get no Grilse from the Scvern ; what hsh they get are large, mature fish


. Compte-rendu des séances du sixième Congrès international de zoologie, tenu à Berne du 14 au 19 août 1904 ... Zoology. BUND 8ALM0N MIGRATION 699 The next point, that tlie Grilse havo practically left tlie river, is certain. It is proved by the fact that the average weight of the tish has only va- ried 907 grammes and has gone up in the year of largest take instead of decreasing as it always used to do with the largest take. Ail the fisher- men agrée that they hâve caught no Grilse. The tishmongers also say they get no Grilse from the Scvern ; what hsh they get are large, mature fish. This point may therefore be regarded as established. The large fish, that is, fish over ,875 grammes hâve disappeared. A record of those caught has been kept for some years. For the last tive years 8 is the highest nuniber. Table 111 shows the number for 10 years. TABLE I Number of Salmon caught in the Severn in the 10 years 1894-1903. 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 25,000 24,000 22,000 21,000 20,000 19,000 18,000 17,000 16,000 15,000 14,000 13,000 12,000 11,000 10,000 9,000 8,000 averase weight. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original International Congress of Zoology (6th : 1904 : Bern). Genève, W. Kündig & fils


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1905