. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Fig. 22.âFifth stage: Scale, or larval re- mains, in sacbrood as seen on lookiag into the cell. (Original.) proceeds further the contents of the sac become pastelike in consistency. â Condition of the virus in the fourth stage.âAs in the preceding stage, the larval remains in the fourth stage do not seem to be infectious. Fifth Fig. 23.âFifth stage: Scale, or larval remains, in sacbrood viewed at an angle from above. (Original.) The dead larva in this last stage has lost by evaporation all of its moisture, leav
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Fig. 22.âFifth stage: Scale, or larval re- mains, in sacbrood as seen on lookiag into the cell. (Original.) proceeds further the contents of the sac become pastelike in consistency. â Condition of the virus in the fourth stage.âAs in the preceding stage, the larval remains in the fourth stage do not seem to be infectious. Fifth Fig. 23.âFifth stage: Scale, or larval remains, in sacbrood viewed at an angle from above. (Original.) The dead larva in this last stage has lost by evaporation all of its moisture, leaving the dry, mummylike remains know^n as the "; Anterior third.âThe anterior third (fig. 22; PI. II, Z) through dry- ing is retracted from the mouth of the cell, with the apex drawn stiU deeper into the ceU and raised toward its roof. This third is greatly wrinkled, and, being of a very dark-brown color, presents often an almost black appearance. Middle third.âTlie middle third (fig. 23; PI. II, r), is deeply concave from side to side and may show remnants of the segmental markings of the larva. The surface is often roughened through drying. Sometimes both longitudinal and transverse tracheae are. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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