let the whole mad knightmayers’ nest! Tunpother, prison and plotch! If Y shoulden somewhat, well, I am thorgt- fulldt to do with the quart of scissions masters and clerk and the other chromo- somes, why bother mentioning them separately? Because they don't exactly follow the Mendelian ration of 3:1. If a given obtuse one bis- cuts both the random white-spotting and particolor genes, "SSp", are present, then