Fig. 
297- 
298. 
299. 
300. 
3or. 
302. 
303+ 
Embryo iis 6 sa 
. The Parts of the Ccoelom in the 
. The 
. The River-Lamprey 
. Tails of Fishes .. 
. Fins of Fishes 
. Diagram of the Typical Mam- 
. The 
4 
. Three Early Stages in Develop- 
. An 
LIST OF ILLUSTRATIONS. 
Page 
Development of the Vertebrate 
Ear oF if ts +. 41 
A_Diagram of the Vertebrate 
Ear Sf ‘a ve 412 
Development of Vertebrate 
Cranium Pe Da ve 405 
Development of Vertebrate 
Cranium 415 
Diagram of Pentadactyle Limb 420 
Development of the Vertebrate 
eart .. wie fs os 421 
Lateral Views of Anterior 
Arterial System of Verte- 
brates. 422 
. The ‘Arterial Arches of Verte- 
brates .. 
5. Diagrammatic Transverse Sec- 
tion of a Vertebrate Embryo 
. Diagrammatic Transverse Sec- 
tion through a later Vertebrate 
424 
Thoracic Cavity of a Mammal 424 
Evolution of the Foetal 
Membranes of Vertebrata .. 428 
- 434 
435, 
ae oer 4S 
‘Lateral View of Skull of 
Rattlesnake 442 
. Right Shoulder “Girdle of (a 
Tortoise . 86 
Skeleton of a Tortoise .. 444 
ees View of a Crocodile’s 
Skull 
443 
445 
. Ventral View of Crocodile’s 
Skull... = 
. Archzopteryx 
: Men ee of the Skull iat 
n Ostrich 
. The Kiwi. 
. Section through the Skin of ig 
Mammal 
4st 
454 
. Diagrammatic Sections. illus- 
trating the Bevelepnicnt of a 
Hair... re nis 
. A Rete Mirabile a6 a4 
. Diagram of | Mammalian 
Female Urogenital Organs . 467 
. Three peer of Mammalian 
Scapula . 
5 Tater! Views of Crocodile’s 
Pelvis, Pelvis of Prototheria, 
and Pelvis of Eutheria 
malian Fore- and. Hind-Limb 
Mammalian Graafian 
Follicle in the Ovary 
ment of Rabbit 477 
. Diagrams of the Foetal Mem- 
branes of a Mammal . 
Embryo Horse of Six 
Weeks in its Membranes 
Fig. 
331- 
332 
333+ 
. Ventral 
. Diagram of Hypsiprymnus (A 
. Ventral 
. Lateral View of Horse's Skull 
. Ventral View of Skull of Horse 
. Upper Jaw (left-half) of Foun 
. The Foot Skeleton of 
. Lateral View of Lion’s Skull . 
. The Skull of the Dog from the 
. Ventral View of Lion’s Skull 
. The Permanent Teeth of the 
xxi 
Page 
Six Different ‘l'ypes of Placenta 483 
Diagram of the Voetal Mem- 
branes of Echidna, as seen in 
Cross-section .. 
Ventral View of Male Uro- 
genital Organs of Ornithor- 
hynchus ag os +. 489 
View of Pectoral 
Girdle and Fore-Limb of 
Ornithorhynchus ae 490 
. Pelvis of Ornithorbynchus 490 
491 
. Fore (A) and Hind (B) Foot of 
the Duckmole .. 492 
488 
- Duckmole 
. Bones of Limbs of Ornithor- 
hynchus 
. Skull of Ornithorhynchus 
. Diagram of — Phascolarctos 
(Koala) Embryo and _ its 
Fcetal Membranes 
+ 493 
» 494 
496 
Kangaroo) Embryo in_ its 
Foetal Membranes... 496 
. Diagram of Embryo of Pera- 
meles with Fo:tal Membranes 497 
. Lateral View of Skull of a 
Young Kangaroo. 
View of Skull 
Kangaroo 
+. 499 
of 
499 
. Pelvic. Girdle of the Kangaroo 501 
. Hind-foot of Kangaroo ++ 5OL 
Jaws and Teeth of the Opossum 502 
. Inner View of Left Ramus of 
Lower Jaw of Amphilestes 
Broderipi 
. Posterior View of Lower Jaw 
of Wombat 
(A) and Old Horse (B) 
. Stomach of a Ruminant 514 
. The Right Manus of a Horse 
. The Right Manus of an Ox 
. Tibiofibula of a Horse .. 
. Right Femur of a Home 
. The Left Pes of an Ox. 
. Right Pes of Horse .. 
. The Manus of (A) the Tapir, 
(B) the Rhinoceros ’and (C) 
the Horse 
the 
Horse and Four of its 
Ancestors 522 
Right Side 
Wolf 
A Side View of a Cat’s Toe 
with Retractile Claw 
Entire Skeleton of the Ai or 
Three-toed Sloth a 
