. Carnegie Institution of Washington publication. Ill III. Transverse section of Pholinus pyralis (dia- grammatic). The right-hand half shows the arrangement and distribution of the tracheae, while the left-hand half shows the modification of the luminous tissue at the point of attachment of the breath- ing muscles. G, testes; /, intestine; L, true photogenic tissue; R, reflecting layer; 5. spiracle or stigmatum; Sp, spiral organs (function uncertain); T, main tracheae to photogenic organ; Tb, main respiratory trachea;; M, muscle fibers. Fig. 4. This description seems a little fantastic, for o
. Carnegie Institution of Washington publication. Ill III. Transverse section of Pholinus pyralis (dia- grammatic). The right-hand half shows the arrangement and distribution of the tracheae, while the left-hand half shows the modification of the luminous tissue at the point of attachment of the breath- ing muscles. G, testes; /, intestine; L, true photogenic tissue; R, reflecting layer; 5. spiracle or stigmatum; Sp, spiral organs (function uncertain); T, main tracheae to photogenic organ; Tb, main respiratory trachea;; M, muscle fibers. Fig. 4. This description seems a little fantastic, for optically the system is extremely inefficient. The low reflecting power which must obtain in the so-called "reflecting layer" and the roundabout way for the light to reach. A, Section through the ventral region of a lish, Maiirulicus pennanti. B, Section through a light organ of a fish. (After Mangold.) Fig. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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