This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced

Excerpt from The Entomologist's Record and Journal of Variation, 1964, Vol. 76 Continued existence of certain butter flies. Some considerations on some present

Excerpt from The Entomologist's Record and Journal of Variation, 1956, Vol. 68 From the backcross there emerged only apparent types, all of which I assumed to b

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the publi