. The shell book . soon assume its natural position. The business-like collector goes prepared, carrying small,smooth wooden slats and a ball of soft cotton twine. He deftlyslips the specimens, one by one, to a place on the wet slat, towhich they gratefully attach themselves, and are promptlybound with coils of the twine. Thus they are dried in properposition for museum or cabinet specimens. The girdle is a muscular belt, which helps to hold the platesin place, and forms the margin of the shield. The leatherycovering is variously coloured and marked. It may be stripedor marbled, with smooth, h
. The shell book . soon assume its natural position. The business-like collector goes prepared, carrying small,smooth wooden slats and a ball of soft cotton twine. He deftlyslips the specimens, one by one, to a place on the wet slat, towhich they gratefully attach themselves, and are promptlybound with coils of the twine. Thus they are dried in properposition for museum or cabinet specimens. The girdle is a muscular belt, which helps to hold the platesin place, and forms the margin of the shield. The leatherycovering is variously coloured and marked. It may be stripedor marbled, with smooth, horny surface, or covered with down, orscales, or tufted stout limyspicules and knobs, like the sea-urchins. Sometimes the margin has a deep posterior slit or the width is so great that the plates are entirelycovered over by the girdle. In other forms the girdle is narrow. The Californian coast is the best place to study chitonsalive. The greatest variety to be found in any one region is 238. LIMPETS, CHITON AND SHIELD SHELL 1,2,3 White Cap Limpet, Acmoea milra. 6, 7 File Limpet, Acmaa scabra. 4, S Ribbed Limpet, Acmxa spectrum. 8 Chiton, Katharine tunicata 9, 10 Duck-bill Shield Shell, Sculus aiwlina.
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Keywords: ., bookcentury1900, bookdecade1900, bookidshellbook00r, bookyear1908
