Archive image from page 818 of The depths of the ocean. The depths of the ocean : a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic depthsofoceangen00murr Year: 1912 GENERAL BIOLOGY 765 The study of numerous samples taken from the fish-stock Age-com- of a certain area may aim at ascertaining the age-com- tSockof position of that stock, and from the results the follow- fishes. ing main points in the natural history of the fish may be elucidated: (i) the age at which maturity occurs; (2)
Archive image from page 818 of The depths of the ocean. The depths of the ocean : a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic depthsofoceangen00murr Year: 1912 GENERAL BIOLOGY 765 The study of numerous samples taken from the fish-stock Age-com- of a certain area may aim at ascertaining the age-com- tSockof position of that stock, and from the results the follow- fishes. ing main points in the natural history of the fish may be elucidated: (i) the age at which maturity occurs; (2) the A B Fig. 560. Two scales of fi\'e-year-old herrings. A, growth under normal conditions ; B, abnormal growth in the third zone. duration of life ; and {3) the variations in the age-composition and magnitude of the fish-stock. Studies of this kind have shown us that various species
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Keywords: 1900, 1910, 1912, _michael_sars_north_atlantic_deep_sea_expedition_191, appell_f_jakob_johan_adolf_1857_, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, drawing, gran_h_h_haakon_hasberg_1870_, helland_hansen_bj_rn_1877_, historical, history, illustration, image, london_macmillan, murray_john_sir_1841_1914, north_atlantic_ocean, oceanography, page, picture, print, reference, vintage
