. Natural history of the American Decapoda (Crustacea); Lobster fisheries. rf-^i i'^fi ^ V;,,"^; 1^ SSs, X . V â¢'"<(,-«**«SA^« , Fig. 3. Fig. I.âPart of section parallel to long axis of gill, showing three transverse rows of filaments, cut crosswise, and their double tubular character; a/and e/, afferent and efferent division of filament. Enlarged 27 times. ,1 â ! Fig. 2.âDiagram of transverse section ot lobster's gill, viewed as a transparency, to show probable course of circulating blood as indicated by arrows; af. v, bianchial stem afferent; ef. v, branchial s
. Natural history of the American Decapoda (Crustacea); Lobster fisheries. rf-^i i'^fi ^ V;,,"^; 1^ SSs, X . V â¢'"<(,-«**«SA^« , Fig. 3. Fig. I.âPart of section parallel to long axis of gill, showing three transverse rows of filaments, cut crosswise, and their double tubular character; a/and e/, afferent and efferent division of filament. Enlarged 27 times. ,1 â ! Fig. 2.âDiagram of transverse section ot lobster's gill, viewed as a transparency, to show probable course of circulating blood as indicated by arrows; af. v, bianchial stem afferent; ef. v, branchial stem efferent; c r, circular vessel;/, ijiU filament. The relations of the two divisions of the filament to the two divisions of the stem are shown in but few cases only. AH filaments communicate with the stem afferent on the one hand and with the stem efTerent on the other I?IG. 3.âTransverse section of oviduct of adult lobster immediately before egg-laying, showing its glandular lining epithelium greatly distended. Fig. 4.âTransverse section of oviduct of adult lobster taken immediately after egg-laying, showing the shrunken and vesiculated character of its Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Herrick, Francis Hobart, 1858-1940. Washington, Govt. Print. Off.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashingtongovtprin
