Page:  of 208
 
Fig. 18. Section through the spinal cord showing the early de-
velopment of a spinal nerve facing page 		50
Fig. 19. Organs developing from the rudimentary alimentary
canal 		52
Fig. 20. The development of the human heart 54
Fig. 21. The development of the face of a human embryo (His)
facing page 		56
Fig. 22. The relation of the fetal to the maternal blood in the
human placenta facing page 		58
Fig. 23. Comparison of the embryos of various mammals at
corresponding stages of development facing page 		62
Fig. 24. Changes in proportion during growth 66
Fig. 25. Growth curves for increase in weight and stature in
both sexes 		68
Fig. 26. The cæcum and vermiform appendix in various mam-
mals 		74
Fig. 27. Supernumerary nipples of man 77

-x-

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Publication Information: Book Title: The Evolution of Man: A Series of Lectures Delivered before the Yale Chapter of the Sigma XI during the Academic Year 1921-1922. Contributors: Richard Swann Lull - author, Harry Burr Ferris - author, George Howard Parker - author, James Rowland Angell - author, Albert Galloway Keller - author, Edwin Grant Conklin - author, George Alfred Baitsell - editor. Publisher: Yale University Press. Place of Publication: New Haven, CT. Publication Year: 1922. Page Number: x.
    
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