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of Fisheries, 1928, Part II, 1930, 670 pp. Washington. 
Ltjndvall, Halvar. 
1905. Weiteres uber demonstration embryonaler Skelette. Anatomischer Anzeiger, Band 
XXVII, No. 20 and 21, Oktober, 1905, pp. 520-523. Jena. 
Mall, Franklin P. 
1906. On ossification centers in human embryos less than one hundred days old. American 
Journal of Anatomy, vol. 5, 1905-1906, pp. 433-458. Philadelphia. 
Nash, C. W. 
1908. Check fist of the vertebrates of Ontario and catalogue of specimens in the Biological 
Section of the Provincial Museum. Fishes. Department of Education, Toronto, 
1908, 122 pp., pis. L. K. Cameron, printer. Toronto. 
Reighard, Jacob. 
1906. The breeding habits, development, and propagation of the black bass. In Appendix 
to Sixteenth Biennial Report, Michigan State Board Fish Commission. Bulletin 
of Michigan Fish Commission, No. 7, 1906, 11 figs, 2 pis. Lansing, Mich. 
1920. The breeding behavior of the .suckers and minnows. 1. The suckers. Biological 
Bulletin, vol. 38, No. 1, January, 1920, pp. 1-32, 7 figs. Lancaster, Pa. 
Stewart, N. H. 
1926. Development, growth, and food habits of the white sucker, Catostomus commersonii. 
■Bulletin, U. S. Bureau of Fisheries, Vol. XLII, 1926 (1927), pp. 147-184, 55 figs. 
Washington. 
