. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits. Spiders. 124 AMERICAN SPIDERS AND THEIR SPINNINGWORK. matter of those tissues which are atrophied and undergo the regenera- tion of the fat benefits the organism in three ways: First, in transmitting that matter by means of the amoeboid blood cells, which assim- Deduc- ilate an(j piasmaticaiiy digest it,1 essentially after the regeneration of grease becomes less intense, and even appears to have touched its limit. Second, in transmittin
. American spiders and their spinning work. A natural history of the orbweaving spiders of the United States, with special regard to their industry and habits. Spiders. 124 AMERICAN SPIDERS AND THEIR SPINNINGWORK. matter of those tissues which are atrophied and undergo the regenera- tion of the fat benefits the organism in three ways: First, in transmitting that matter by means of the amoeboid blood cells, which assim- Deduc- ilate an(j piasmaticaiiy digest it,1 essentially after the regeneration of grease becomes less intense, and even appears to have touched its limit. Second, in transmitting the matter by means of the red blood cells which assimilate it by absorption. Third, by means of globules of grease, which in themselves present certain forms whose role is to transport the nutritive matter into the whole body. 3. It is doubtful whether, without cooperation of blood cells, regeneration of fatty tissues would proceed to complete disappearance; if it could occur it would be after a considerable and indefinite time. 4. The process of degeneration of muscular tissue in spiders, in its general traits, suggests that of vertebrate SR VI. In the descriptive matter to which the second part of this volume is devoted certain terms and abbreviations are used that require explanation and illustration, which it seems best to Nomen- jnsert together at this point for con- vcnience of reference. The quadrilat- tion era,l described by the middle group of four eyes (MF and MR) is called the ocular quadrilateral, or more commonly " ocular quad " (Fig. 87, ocq), as at once a brief and definitive term. The ocular area or eye space (es) is that part of the face over which the eight eyes are distributed. The curvature of the eye sRrsidefront and"sMerear"eyes'; rows forms an important characteristic in deter- , ocular quad; v, vertex. mining species. The rows are said to be pro- curved when the concavity is directed forward toward the mandibl
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectspiders, bookyear1889
