. The call of the hen; or, The science of selecting and breeding poultry for egg-production. Poultry. THE CALL OF THE HEN. Ill CHAPTER XX. Walter Hogan's System. This chapter contains "Walter Hogan's System," as written by M. F. Greeley, editor of the Dakota Farmer, to whom I gave the notes. This was published in 1904. At that time Mr. Greeley refused to put in anything about the skull theory. He said that I would make myself the laughing-stock of the world. I am merely putting this old work in this book in order that the reader may know the evolution of the dis- covery. The pelvic b
. The call of the hen; or, The science of selecting and breeding poultry for egg-production. Poultry. THE CALL OF THE HEN. Ill CHAPTER XX. Walter Hogan's System. This chapter contains "Walter Hogan's System," as written by M. F. Greeley, editor of the Dakota Farmer, to whom I gave the notes. This was published in 1904. At that time Mr. Greeley refused to put in anything about the skull theory. He said that I would make myself the laughing-stock of the world. I am merely putting this old work in this book in order that the reader may know the evolution of the dis- covery. The pelvic bone method of selection was, of course, my first discovery; then later, the relation between depth of abdomen and thick- ness of pelvic bones; after that, the working out of the mathematical relation between egg-laying ability and those points before mentioned. When I came to California I gave out merely the "Walter Hogan's System" which had been printed in Minnesota; later I published a "Supplement," which gave a general idea of the capacity and type proposition; still later I issued typewritten charts as they are found in this book. I could have done all this many years ago, but my reasons for not doing it are explained elsewhere. I do not desire any of my readers to make the mistake of considering what comes after this as having anything to do with "The Call of the Hen," except in a historical way. Walter Hogan. Petaluma, Cal., July 31, FIG. 162—SPAN BETWEEN PELVIC BONE AND KEEL ILLUSTRATED IN DRESSED FOWLS The bird on the left in this illustration is a high-producing R. I. Red hen, and the one on the right a low producing hen. Note the greater distance between keel and pelvic bone, also the much rounder breast of the heavy layer, caused not by fat but by the more prominent sternal processes. Photo from Storrs Experiment Station. Note the large moist vent in the good layer, on the left. Also the skin of the good layer is soft and pliabl
Size: 2297px × 1088px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectpoultry, bookyear1922
