404 AN INTRODUCTION TO THE STUDY OF FOSSILS 



10. Scott, W. B., "An Introduction to Geology." The Macmillan 



Co., 1908. 



(Gives a very good summary of historical geology.) 

 loa. U. S. Bureau of Fisheries, Washington, D. C, and various state 

 organizations of similar names have many free publications 

 full of information of the highest value. 



11. Woods, H., " Elementary Paleontology " (Invertebrate). Cam- 



bridge Univ. Press, 1896. 



12. ZiTTEL, K. A. VON, "Text Book of Paleontology" (Invertebrata). 



Ed. by C. R. Eastman, ed. 2, 1913. 



(A standard reference and textbook on invertebrate paleontol- 

 ogy.) 



PROTOZOA 



13. Calkins, Gary N., "Protozoology." N. Y., 1909. 



14. CuSHMAN, J. A., "A Monograph of the Foraminifera of the 



North Pacific Ocean." U. S. Nat. Mus. Bull. 71, 1910. 



15. Jennings, H. S., "Behavior of the Lower Organisms." Colum- 



bia Univ. Press, 1906. 



SPONGES 



16. Hall, J., and Clarke, J. M., "The Paleozoic Dictyospongidae." 



N. Y. State Museum, Mem, 2, 1898. 



17. MiNCHiN, E. A., The Porifera. "A Treatise on Zoology." Ei. 



by Lankester, pt. 2, A. & C. Black, London, 1900. 



CCELENTERATA 



18. Bourne, G. C, "The xAnthozoa." Zoology, ed. by Lankester. 



pt. 2, 1900. 



19. Fowler, G. H., "The Hydrozoa." Zoology, ed. by Lankester 



pt. 2, 1900. 



20. RuEDEMANN, R., " Graptolites of New York." N. Y. State Mus., 



Mem. 7, 1904, and 11, 1908. 



ECHINODERMATA 



21. Bather, F. A., Echinoderma. "A Treatise on Zoology." Ed. 



by Lankester, pt. 3, 1900. 



22. Jackson, R. T., "Phylogeny of the Echini." Mem. Bos. Soc. Nat. 



Hist., vol. 7, 191 2. 



