Shell-fish industries . does not lie in a per-fectly straight line. Here and there parts of it projectinto the current. Now oysters growing on such pointsare very much favored, because the currents are a littlemore rapid there. This means that aeration is better,and especially that a greater amount of food is these favored oysters grow more rapidlythan others. Their number, also, increases more rap-idly here, for the reason that the more active currentkeeps their shells comparatively clean, thus affording ob-jects for the attachment of the young. A greater numberof swimmin
Shell-fish industries . does not lie in a per-fectly straight line. Here and there parts of it projectinto the current. Now oysters growing on such pointsare very much favored, because the currents are a littlemore rapid there. This means that aeration is better,and especially that a greater amount of food is these favored oysters grow more rapidlythan others. Their number, also, increases more rap-idly here, for the reason that the more active currentkeeps their shells comparatively clean, thus affording ob-jects for the attachment of the young. A greater numberof swimming embryos, also, will be brought to the pro-jecting point by the swifter current than to other partsof the river bank. From time to time, winds, waves orice, break clusters of oysters from the point. They rolldown toward the channel, many of the oysters continu-ing to live and grow. Year after year these clusters ac-cumulate on the bottom beyond the point. Sedimentgradually settles among the lower shells, while new gen-. Fig. 48. Laboratory employees tonging and culling clusteredoysters in Louisiana. Note the character of tongs andculling board.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1910
