Keywords: Figure 7 Descent of Man - Charles Darwin - cleaned up.png Figure 7 from The Descent of Man by Charles Darwin Original caption Gryllus Camperstris from Landois Left-hand figure underside of part of a wing nervure much magnified showing the teath st Right-hand figure upper surface of the wing-cover with the projecting smooth nervure r across which the teeth st are scraped Own scan of the book ~ 1870 Various - Charles Darwin Public domain life+70 Image Plate I - figure 4 to 10 - Descent of man - Charles Darwin png PD-old The Descent of Man and Selection in Relation to Sex |