Through a pocket lensNote 18 — Chapter III · COCKROACHES; EARWIGS; THE GREAT GREEN GRASSHOPPER; THE WATER SCORPION; THE WATER BOATMAN; CORIXA.Reading editionThe Senses of Animals, p. 44.◇Copy noteReturn to CHAPTER III COCKROACHES; EARWIGS; THE GREAT GREEN GRASSHOPPER; THE WATER SCORPION; THE WATER BOATMAN; CORIXA.