369. The carapaces of certain crabs, _Geryon_, _Corystes_ and others, compared by means of rectilinear and curvilinear coordinates . . . 744 370. A comparison of certain amphipods, _Harpinia_, _Stegocephalus_ and _Hyperia_ . . . 746 371. The calycles of certain campanularian zoophytes, inscribed in corresponding Cartesian networks . . . 747 372. The calycles of certain species of _Aglaophenia_, similarly compared by means of curvilinear coordinates . . . 748 373, 4. The fishes _Argyropelecus_ and _Sternoptyx_, compared by means of rectangular and oblique coordinate systems . . . 748 375, 6. _Scarus_ and _Pomacanthus_, similarly compared by means of rectangular and coaxial systems . . . 749 377–80. A comparison of the fishes _Polyprion_, _Pseudopriacanthus_, _Scorpaena_ and _Antigonia_ . . . 750 381, 2. A similar comparison of _Diodon_ and _Orthagoriscus_ . . . 751 383. The same of various crocodiles: _C. porosus_, _C. americanus_ and _Notosuchus terrestris_ . . . 753 384. The pelvic girdles of _Stegosaurus_ and _Camptosaurus_ . . . 754 385, 6. The shoulder-girdles of _Cryptocleidus_ and of _Ichthyosaurus_ . . . 755 387. The skulls of _Dimorphodon_ and of _Pteranodon_ . . . 756 388–92. The pelves of _Archaeopteryx_ and of _Apatornis_ compared, and a method illustrated whereby intermediate configurations may be found by interpolation (G. Heilmann) . . . 757–9 393. The same pelves, together with three of the intermediate or interpolated forms . . . 760 394, 5. Comparison of the skulls of two extinct rhinoceroses, _Hyrachyus_ and _Aceratherium_ (Osborn) . . . 761 396. Occipital views of various extinct rhinoceroses (_do._) . . . 762 397–400. Comparison with each other, and with the skull of _Hyrachyus_, of the skulls of _Titanotherium_, tapir, horse and rabbit . . . 763, 4 401, 2. Coordinate diagrams of the skulls of _Eohippus_ and of _Equus_, with various actual and hypothetical intermediate types (Heilmann) . . . 765–7 403. A comparison of various human scapulae (Dwight) . . . 769 404. A human skull, inscribed in Cartesian coordinates . . . 770 405. The same coordinates on a new projection, adapted to the skull of the chimpanzee . . . 770 406. Chimpanzee’s skull, inscribed in the network of Fig. 405 . . . 771 407, 8. Corresponding diagrams of a baboon’s skull, and of a dog’s . . . 771, 3 “Cum formarum naturalium et corporalium esse non consistat nisi in unione ad materiam, ejusdem agentis esse videtur eas producere cujus est materiam transmutare. Secundo, quia cum hujusmodi formae non excedant virtutem et ordinem et facultatem principiorum agentium in natura, nulla videtur necessitas eorum originem in principia reducere altiora.” Aquinas, _De Pot. Q._ iii, a, 11. (Quoted in _Brit. Assoc. Address_, _Section D_, 1911.)