. Age of the domestic animals : being a complete treatise on the dentition of the horse, ox, sheep, hog, and dog, and on the various other means of determining the age of these animals. Domestic animals -- Age; Teeth. ERUPTION OF THE PERMANENT TEETH. 191 " Besides the nutrition influence, a strong or weak muscular action plays an important part in the production of form. The pulling and pressure of muscles extensively used for certain pur- poses, especially those of the head and neck, will give the head a characteristic shape. Pigs which are prevented from rooting will acquire a short, hi
. Age of the domestic animals : being a complete treatise on the dentition of the horse, ox, sheep, hog, and dog, and on the various other means of determining the age of these animals. Domestic animals -- Age; Teeth. ERUPTION OF THE PERMANENT TEETH. 191 " Besides the nutrition influence, a strong or weak muscular action plays an important part in the production of form. The pulling and pressure of muscles extensively used for certain pur- poses, especially those of the head and neck, will give the head a characteristic shape. Pigs which are prevented from rooting will acquire a short, high, and rounded head, while those Avhicli are forced to root to secure a portion of their food will develop a long and slender form of head. If we force both experiments to the greatest degree possible, we shall produce. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Huidekoper, Rush Shippen, 1854-1901. Philadelphia ; London : F. A. Davis
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphiladelphialondon
