LIST OF ILLUSTRATIONS 



PACK 



'ig. i. Skull and Vertebral Column of Frog ... 25 



,, 2. Shoulder Girdle of Frog. .... 29 



,, 3. Fore Limb of Frog . . . . 3 1 



,, 4. Mind Limb of Frog ..... 34 



,, 5. Typical Fore and Hind Limbs of Pentadactyle Vertebrate 36 



,, 6. Tran verse Section of Body of Frog ... 39 



,, 7. Heart and Truncus Arteriosus of Frog . . . 47 



8. Arteries of Frog . ... .50 



,, 9. Venous System of Frog . 53 



,, 10. Spinal and Sympathetic Nerves of Frog . . 59 



,, ii. Brain and Cranial Nerves of Frog ... 64 



,, 12. Right Membranous Labyrinth of Frog's Ear . . 7 



,, 13. Red and White Blood Corpuscles of Frog and Man . 74 



,, 14. Stratified, Pavement, Ciliated, and Columnar Epithelia 84 



,, 15. Sensory Epithelia . . . . 89 



,, 16. Nerve Ganglion Cells and Nerve-Fibre. . . 91 



,, 17. Unstriped Muscle-Fibre . 95 



,, 1 8. Embryonic Striped Muscle-Fibre and Cardiac Muscle- 

 Fibre. ...... 98 



,, 19. Areolar Connective Tissue .... loo 



,, 20. Hyaline Cartilage . . . . . IO2 



,, 21. Structure of Bone ..... 105 



,, 22. Adipose Tissue . . . . . .108 



,, 23. Diagrams of the Essential Phenomena of Mitosis . 113 



,, 24. Spermatozoa of Frog ..... 119 



,, 25. Diagrams of the Essential Phenomena of Sperm ato- 



genesis . . . . . .121 



,, 26. Fertilisation of the Amphibian Ovum . . . 124 



,, 27. Segmentation of the Frog's Ovum . . . 126 



,, 28. Sections through segmenting Ovum of Frog . . 127 



