Venoms; venomous animals and antivenomous serum-therapeutics . Fig. 21. —Scorpio occitamis. (After Joyeux-Laffuie.) 1, Scorpion seizing a spider, and piercing it with its sting (natural size) ; 2,extremity of the abdomen (telson) enlarged, showing the poison-apparatus ; 3, poison-apparatus detached from the abdomen, showing an isolated poison-gland. the purpose of defending itself from attack it elevates its abdomeninto a bow, and then regains its former position by suddenly unbend-ing it. To strike an animal, such as a spider, which serves it forfood, the scorpion seizes it with its pincers a
Venoms; venomous animals and antivenomous serum-therapeutics . Fig. 21. —Scorpio occitamis. (After Joyeux-Laffuie.) 1, Scorpion seizing a spider, and piercing it with its sting (natural size) ; 2,extremity of the abdomen (telson) enlarged, showing the poison-apparatus ; 3, poison-apparatus detached from the abdomen, showing an isolated poison-gland. the purpose of defending itself from attack it elevates its abdomeninto a bow, and then regains its former position by suddenly unbend-ing it. To strike an animal, such as a spider, which serves it forfood, the scorpion seizes it with its pincers and holds it as in a it raises its abdomen, brings the end of it close to its captive, 278 VENOMS and, with a lever-like movement, drives the sting into its victim immediately becomes paralysed and motionless.^ The poison-glands of a Scorpio occitanus from the South ofFrance contain about 1 to 10 centigrammes of a toxic liquid,capable of furnishing 10 to 15 per cent, of dry extract. This liquidis decidedly acid ; it reddens litmus paper a
Size: 3397px × 736px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubject, booksubjectserpents
