More Prizes for Safety Devices. 5. Teasel Heads. 6. Sea Urchin. 7. Rolled-up Hedgehog. S. Porcupine Quills Developed from Ordinary Hair. 9. Prickly Fruit Capsules of Horse Chestnut. 10. Family of Baby Hedgehogs. . Thorn Bug ; the First and Last Projections on Under Side of Branch Show the Bugs. 12. Horned Toad. NATURE'S TOUCH-ME-NOTS., scientific american, 1907-06-08
More Prizes for Safety Devices. 5. Teasel Heads. 6. Sea Urchin. 7. Rolled-up Hedgehog. S. Porcupine Quills Developed from Ordinary Hair. 9. Prickly Fruit Capsules of Horse Chestnut. 10. Family of Baby Hedgehogs. . Thorn Bug ; the First and Last Projections on Under Side of Branch Show the Bugs. 12. Horned Toad. NATURE'S TOUCH-ME-NOTS., scientific american, 1907-06-08
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