. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . y destroyannually two hundred thousand dollars worth of oysters. Vast numberscongregate where the feeding-ground is good, and move in long lines fromplace to place. The oystermen dredge over the beds and bring themup in thousands, then steam them or throw them on the shore abovehigh-water mark. (Plate LIV.) A. ochracea. The common starfish of the Pacific coast, from Sitka toSan Diego. Five rays, each hardly twice as long as the diameter ofthe body; spines running irregularly o
. The sea-beach at ebb-tide : a guide to the study of the seaweeds and the lower animal life found between tidemarks . y destroyannually two hundred thousand dollars worth of oysters. Vast numberscongregate where the feeding-ground is good, and move in long lines fromplace to place. The oystermen dredge over the beds and bring themup in thousands, then steam them or throw them on the shore abovehigh-water mark. (Plate LIV.) A. ochracea. The common starfish of the Pacific coast, from Sitka toSan Diego. Five rays, each hardly twice as long as the diameter ofthe body; spines running irregularly over the surface, but forming apentagon at the middle of the disk and inclosing the madreporic plate ;diameter eight inches. It is very common near San Francisco on rocksat low-water mark. (Plate LIV.) A. gigantea. Body very large and swollen; six rays, somewhat lessin length than twice the diameter of the disk; aboral surface coveredwith numerous short, blunt, equidistant spines of uniform size andregularly distributed; spines contracted at the base and striated; diam-eter two feet. Found on the California
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmarinea, bookyear1901
