Piebald rats and selection, by William Ernest Castle 74375 [Subtitle: An experimental test of the effectiveness of selection and of the theory of gametic purity in Mendelian crosses] [Author: William Ernest Castle] [Author: John Charles Phillips] [Link: https://www.gutenberg.org/ebooks/74375] note: link will be active within two hours of posting. Thanks to Brian Wilson, Bryan Ness and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/Canadian Libraries) Regards, Al