Through a pocket lensNote 20 — Chapter III · COCKROACHES; EARWIGS; THE GREAT GREEN GRASSHOPPER; THE WATER SCORPION; THE WATER BOATMAN; CORIXA.Reading editionBook of Nature, p. 94.◇Copy noteReturn to CHAPTER III COCKROACHES; EARWIGS; THE GREAT GREEN GRASSHOPPER; THE WATER SCORPION; THE WATER BOATMAN; CORIXA.