[13] See Dr. Raymond Crawfurd's mistaken statement that "the identity of œstrus, or 'heat' in the lower animals and of menstruation in the human female, admits of no doubt." P. 62 Proc. Roy. Soc. Medicine, vol. 9., 1916.
[14] The best modern account of these complex subjects will be found in the advanced text-book, "The Physiology of Reproduction," pp. xvii., 706, by F. H. A. Marshall. Reference may be made to original papers by J. Beard in the Anat. Anzeiger for 1897; and by Heape in the Philosophical Trans. Royal Society, 1894, 97.
Transcriber's note:
The footnote on page 17 says "The italics are mine.—M. C. S.", however, there are no italics found in the designated paragraph.
Minor typographical and punctuation errors have been corrected without note. Irregularities and inconsistencies in the text have been retained as printed.
The cover for the eBook version of this book was created by the transcriber and is placed in the public domain.