Ophidians, zoological arrangement of the different genera, including varieties known in North and South America, the East Indies, South Africa, and AustraliaTheir poisons, and all that is known of their natureTheir galls, as antidotes to the snake-venom .. . ged by the poison, as indicated by large numbers of themwith the double-lined periphery. In Figs. 9 and 10 thepoison-corpuscles are much more abundant, and the appear-ance indicates a much greater decomposition of the bloodthan in any of the other sfigmas. The poison-corpuscle inFig. 12, although of the same kind as in Fig. 7, yet has a ST
Ophidians, zoological arrangement of the different genera, including varieties known in North and South America, the East Indies, South Africa, and AustraliaTheir poisons, and all that is known of their natureTheir galls, as antidotes to the snake-venom .. . ged by the poison, as indicated by large numbers of themwith the double-lined periphery. In Figs. 9 and 10 thepoison-corpuscles are much more abundant, and the appear-ance indicates a much greater decomposition of the bloodthan in any of the other sfigmas. The poison-corpuscle inFig. 12, although of the same kind as in Fig. 7, yet has a STUDY OF THE SFIGMAS. 181 regular periphery like that of the Cobra-poison in Fig. periphery of that seen in Fig. 7 is irregular, but still sosimilar to certain disks in Fig. 2 in appearance, that the onlyapparent difference in the microscopical appearance of the twokinds of poison is the close grouping of small corpuscles seenin Fig. 12, which is wanting in all the others, and only seenunder a power of 1080. The following. Figs. 13 and 14, are from Dr. S. Weir Mitch-ells ^^ Researches upon the Venom of the Rattlesnake. Fig. 13. These crystals were obtained by diluting the venomand allowing the mixture to dry slowly, sheltered by a cover- FiG. Crystals deposited from the diluted venom of the C. conJiuetUus, by glass. The crystals thus formed resemble those of ammoniaco-magnesian phosphate, w4iich affect the feathery form of crys-tallization. The white deposit was composed chiefly of amorphous, 182 OPHIDIANS. granular matter, with a few pavement epithelial cells, com-pound granular bodies of an oleaginous character, and finallyof the peculiar masses known and described as colloidbodies,* and in appearance so much resembling starch gran-ules as to have induced me to neglect them at first, supposingthem to be really that substance accidentally present. Thesecorpuscular bodies were marked with delicate radiating stained them a yellowish-brown. The
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Keywords: ., bookcentury1800, bookdecade1870, bookidophidia, booksubjectsnakes
