. Diseases of cattle, sheep, goats and swine. Veterinary medicine. CHAPTER II. PHTHIRIASIS. The term phthiriasis is applied to infestation of the sldn with Hce. Causation. Tliese diseases are due to the presence of various para- sites \Yhich live Ijy destroying the epidermic scales, or by piercing the superficial layers of the skin. They are of a greyish-yellow colour, and belong to the genera H(ematopinus and Tricliodcrfes. The Hdvnatojiinus forms have pointed heads, and are equipped for. Please note that these images are extracted from scanned page images that may have been digitally enhance
. Diseases of cattle, sheep, goats and swine. Veterinary medicine. CHAPTER II. PHTHIRIASIS. The term phthiriasis is applied to infestation of the sldn with Hce. Causation. Tliese diseases are due to the presence of various para- sites \Yhich live Ijy destroying the epidermic scales, or by piercing the superficial layers of the skin. They are of a greyish-yellow colour, and belong to the genera H(ematopinus and Tricliodcrfes. The Hdvnatojiinus forms have pointed heads, and are equipped for. 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 Moussu, Gustave, 1864-; Dollar, Jno. A. W. (John A. W. ), joint author. New York, W. R. Jenkins
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