Spermatogenesis of normal and of hybrid pigeons a dissertation, submitted to the faculty of the Graduate School of Arts, Literature, and Science, in candidacy for the degree of doctor of philosophy Department of Zoology This book, "Spermatogenesis of normal and of hybrid pigeons a dissertation, submitted to the faculty of the Graduate School of Arts, Literature, and Science, in candidacy for the degree of doctor of philosophy Department of Zoology", by Michael F. Guyer, is a replication of a book originally published before 1900. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.