1. "Comparative Anatomy and Physiology of Vertebrates." Owen. 1866-68.

2. "Manual of the Anatomy of Vertebrated Animals." Huxley. 1872.

3. "Principles of Comparative Physiology." W. B. Carpenter.

4. "Forms of Animal Life." Rolleston. 1870.

5. "General Outline of the Organisation of the Animal Kingdom."

Rymer Jones. 1871.

6. "Handbook of Zoology." Van der Hoeven. Trans. by Dr W.

Clarke. 1856-58.

7. "Manual of Comparative Anatomy." Blumenbach. Trans. by Laurence. 1827.

8. "Comparative Anatomy of Vertebrate Animals." Wagner. Trans. by Tulk. 1845.

9. "Grundriss der Vergleichenden Anatomie." Gegenbaur. 1874.

10. "Le Regne Animal distribue d'apres son organisation." Cuvier.

11. "Lecons d'anatomie comparee." Cuvier.

12. "System der Vergleichenden Anatomic" Meckeh 1821-33.

13. "Lecons sur la physiologie et l'anatomie comparee de l'homme et des animaux." Milne-Edwards. 1857-72.

14. "Lectures on the Elements of Comparative Anatomy." (On the Classification of Animals and on the Vertebrate Skull.) Huxley. 1864.

15. " Discourse on the Nature of Limbs." Owen. 1849.

16. "On the Shoulder-Girdle and Sternum." Parker. 'Ray Society.' 1868.

17. "Lectures on Histology." Quekett. 1852-54.

18. "The Microscope and its Revelations." Carpenter.

19. "How to work with the Microscope." Beale.

20. "Lehrbuch der Histologic des Menschen und der Thiere." Leydig. 1857.

21. "Embryology, with the Physiology of Generation." Muller. Trans. by Baly. 1848.

22. "Elements of Embryology." Foster and Balfour. 1876.

23. "The Geographical Distribution of Animals." Alfred Wallace. 1876.

24. "Recherches sur les ossemens fossiles." Cuvier. 1834-36.

25. "Manual of Palaeontology." Owen. 1861.

26. "Traite de Paleontologie." Pictet. 1853.

27. "Cours elementaire de Paleontologie." D'Orbigny. 1849.

28. "Manual of Palaeontology." Nicholson. 2d ed. 1879.

29. "Generelle Morphologie der Organismen." Haeckel. 1866.

30. "System der thierischen Morphologie." Victor Carus. 1853.

31. "Entwickelungsgeschichte der Thiere." Von Baer. 1837.

32. "The Morphology of the Skull." Parker & Bettany. 1877.

33. "Lessons in Elementary Anatomy." St George Mivart. 1873.