Book excerpt: This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Genetic Studies On A Cavy Species Cross; Issue 205 Of Carnegie Institution Of Washington Publication; Issue 23 Of Carnegie Institution Of Washington Publication: Papers Of Station For Experimental Evolution At Cold Spring Harbor, New York; Genetic Studies On A Cavy Species Cross; John Adolph Detlefsen; Issue 23 Of Paper ... Of Department Of Genetics; Issue 23 Of Paper (Station For Experimental Evolution) John Adolph Detlefsen Carnegie Institution of Washington, 1914 Evolution; Guinea pigs; Hybridization; Hybrids