. The diseases of poultry. DISEASES OF POULTRY. 59 or more in thickness, which bears upon its surface a growth of the fungus. These membranous patches are at first soft, but become firmer with age, and are yel- lowish or greenish in color, resembling a fibrino-puru- lent exudate. They adhere closely to the mucous membrane which is there thickened and inflamed. The air-sacs are sometimes obstructed by these growths which may in time become caseous or even calcareous. These changes may also be seen in the intestines, the mesentery, the liver and in other Filer. W.—Asf-er^iV/iix g/muiis,
. The diseases of poultry. DISEASES OF POULTRY. 59 or more in thickness, which bears upon its surface a growth of the fungus. These membranous patches are at first soft, but become firmer with age, and are yel- lowish or greenish in color, resembling a fibrino-puru- lent exudate. They adhere closely to the mucous membrane which is there thickened and inflamed. The air-sacs are sometimes obstructed by these growths which may in time become caseous or even calcareous. These changes may also be seen in the intestines, the mesentery, the liver and in other Filer. W.—Asf-er^iV/iix g/muiis, Fig. W.—Aspci-gil/iis fionigatux (7<7, •/•," spore bearing- with conidia t)earers; r;(7,fruit stalks: rr. supports of the spores; heads in optical cross-section; //.chains of spores; gg, bluish /., fruit heads seen from above, green spores. The membrane lining the air-passages may, also, be found ulcerated, and the ulcers may be either naked or covered with a growth of the fungus. There is often seen in the mouth of pigeons a whitish nodule, the size of a pea or larger, which is called a ranker. This is believed by some authorities to be caused by the aspergillus. In the very acute and rapid cases, the lungs may simply show inflammation, or there may be formation of pus or abscesses in the lungs, kidneys, liver and spleen as in pyccmia or septic infection. In some of. 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 Salmon, D. E. Washington, D. C. , G. E. Howard & co.
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Keywords: ., bookcentury1800, bookcollectionamer, bookdecade1890, bookyear1899
