. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 394 ANNALS OF THE SOUTH AFRICAN MUSEUM Cysts dehisced in five days after extraction from the host. They dehisced in the sealed petrie dish and seven out of fourteen cysts exposed to the atmo- sphere also dehisced. Cysts placed in a sealed petrie dish containing anhydrous calcium chloride failed to dehisce. Spores. These are barrel-shaped and very uniform in size, the dimensions being 7-1 X 4-2 microns. The barrel shape is given by an exterior coat of mucus, and when this was removed in glacial acetic
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 394 ANNALS OF THE SOUTH AFRICAN MUSEUM Cysts dehisced in five days after extraction from the host. They dehisced in the sealed petrie dish and seven out of fourteen cysts exposed to the atmo- sphere also dehisced. Cysts placed in a sealed petrie dish containing anhydrous calcium chloride failed to dehisce. Spores. These are barrel-shaped and very uniform in size, the dimensions being 7-1 X 4-2 microns. The barrel shape is given by an exterior coat of mucus, and when this was removed in glacial acetic acid, the spores appeared oval. The spore wall could not be penetrated by ordinary fixatives and stains so that sporozoites could not be seen; however, very young spores were obtained by rupturing a cyst artificially after 48 hours; these had no resistant wall and,. Tl ~m vac „m e — cyf Fig. 3. Gregarina fastidiosa n. sp., epimerite in situ showing effect on host tissues, cyt. undegenerated cytoplasm, e, epimerite. n. nucleus, vac. vacuole with degenerated 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 South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
