CONTENTS: 1. Phylum Chordata:  An Introduction.  
SECTION 1: Protochordates  2. Type-1, Balanoglossus: A Tongue Worm, 3. Sub-phylum I, Hemichordata, 4. Type 2, Herdmania : A Sea-Squirt, 5. Subphylum II, Urochordata, 6. Type 3, Branchiostoma (Amphioxus): The Lancelet, 7. Subphylum III, Cephalochordata, 8. Protochordata: General & Comparative.

SECTION 2: Vertebrates – 9. Subphylum IV, Vertebrata, 10. Class-1, Ostracodermi (Extinct), 11. Type-4, Petromyzon: The Lamprey, 12. Class-2, Cyclostomata, 13. Class-3, Placodermi (Extinct), 14. Type-5, Scoliodon: The Dogfish, 15. Class-4, Chondrichthyes: The Cartilaginous Fishes, 16. Type-6, Labeo rohita  : Rohu, a Bony Fish, 17. Class-5, Osteichthyes: The Bony Fishes, 18. Superclass: Pisces and Fish General, 19. Type-7, Rana tigrina: Common Indian  Bull  Frog,   20.  Class 6,  Amphibia, 21. Amphibia : General Account.

SECTION 3: Higher Vertebrates – 22.  Type- 8,   Uromastix   hardwickii :  The   Spiny   Tailed   Lizard, 23. Type-9, Calotes versicolor, The Garden Lizard, 24. Snakes : General Account, 25. Class-7, Reptilia, 26. Reptilia: General Account, 27. Type-10, Columba livia : The Common Rock Pigeon, 28. Class 8, Aves : The Birds, 29. Aves: General Account, 30. Type-11, Oryctolagus : The Rabbit, 31. Class 9, Mammalia, 32.  Subclass   Prototheria  (Order Monotremata), 33. Infraclass Metatheria (Order Marsupialia), 34. Mammalia : General Account.

SECTION 4: Vertebrate Osteology – 35. Endoskeleton of Scoliodon, 36. Endoskeleton  of Labeo rohita, 37. Endoskeleton of  Frog, 38. Endoskeleton of Varanus, 39. Endoskeleton of Fowl, 40. Endoskeleton of Rabbit. SECTION-5: Vertebrate Embryology –  41. Introduction to Vertebrate Embryology, 42. Development of Balanoglossus, 43. Development of Herdmania, 44. Development of Branchiostoma, 45. Development of Frog,  46. Development of Chick (Fowl), 47. Development of Rabbit,  48.  Placentation  in Mammals. SECTION 6 :  Miscellany – 49. Organ Histology  of  Frog  and   Rabbit, 50. Wild Life of India. SECTION-7:  Comparative  Anatomy – 51. Integuments and its Derivative in Vertebrates, 52. Endo-skeleton in Vertebrates, 53. Digestive System, 54. Respiratory System 55. Circulatory System, 56. Urinogenital System, 57.  Nervous   System,  58. Receptor Organs, 59. Endocrine System, 60. Some  Comparative  Charts  of  Vertebrate  Animal . Types ,  Glossary,  Selected  References.