LIST OF ILLUSTRATIONS xvii 



FIGURE TITLE . PAQB 



163 Foot postures of Mammals 316 



164 Sloth (Choloepus hoffmanni) . J317 



165 Mole (Talpa europea) 317 



166 Porpoise (Phocaena communis) 317 



167 'Flying Lemur' (Galeopithecus volans) 318 



168 Bat (Vesper tilio noctula) 318 



169 Katydid (Microcentrum laurifolium) ...... 319 



170 Underwing Moth (Catocala lacrymosa) 320 



171 Dead-leaf butterfly (Kallima paralecta) 321 



172 Walking-stick (Diapheromera femorata) 322 



173 Larva of a Geometrid Moth 322 



174 Drone Bee and Bee Fly (Eristalis tenax) 323 



175 Bees 325 



176 Head of Bee 326 



177 Legs of Bee 327 



178 Foot of Bee 328 



179 Formation of a Lichen 332 



180 Ants and Aphids 333 



181 Life cycle of a Malarial Parasite 335 



182 Trypanosoma theileri 337 



183 Avoiding reaction of Paramecium 340 



184 Rotation of Paramecium 341 



185 Vertebrate fore-limbs 352 



186 Skeleton of Man and Gorilla 354 



187 Vestigial hind-limbs of a Snake 355 



188 Archaeopteryx 360 



189 Evolution of the Horse 362 



190 Evolution of the Camel . 363 



191 Comparison of embryos of Fish, Bird, and Man . . . 366 



192 Phylogeny of the Elephants 370 



193 Evolution of the head of Elephants 371 



194 Varieties of domestic Pigeons 373 



195 Aristotle 380 



196 Theophrastus of Eresus \ . 381 



197 Andreas Vesalius .'., 384 



198 William Harvey - . 386 



199 Antony van Leeuwenhoek 387 



200 Marcello Malpighi 389 



201 Carolus Linnaeus 391 



202 Georges Cuvier 392 



203 Thomas Henry Huxley 393 



204 Stephen Hales 397 



205 Matthias Jacob Schleiden 399 



