Overglaze painting is infrequent; virtually all early coloured specimens, figures, or vessels have been decorated in Europe, usually in The Netherlands.
In some sponges (e.g., Petrosia ficiformis), colour is related to the number of symbionts; in a cave, for example, sponges gradually change from intensely coloured specimens to light-coloured, sometimes white, ones in the depth of the cave where the number of algae decreases.
Hemispherical reflectance spectra of coloured specimens were measured in the visible wavelength range, and, from them, chromaticity values were calculated.
The coloured specimens from Pergamon on the other hand seem to bear some resemblance to the east African assemblages and especially to the high alumina glasses from Sardis [36], [39], [40].
"Basically it's a catastrophic loss of blood flow to the brain," he said, scooping out one cream-coloured specimen.
The colour pattern varies, ranging from very light-coloured specimens with small, incomplete, dark dorsal crossbars to entirely brown ones with faint or clear, darker brown markings, and on to melanistic individuals that are entirely dark and lack any apparent dorsal pattern.
Several kilns were found on the site, as well as a number of fine specimens of coloured red and gray bowls and jars.
In this way, digital photography has changed the face of the pathology report significantly [ 6], allowing the incorporation of coloured prints of the gross specimen as well as of relevant microscopic features.
The specimen depicted was fudge-coloured and shaggy, and looked replete, as if he'd just eaten a skier.
Small branches were cut from the central portion of each colony prior to specimen collection to confirm pink-coloured eggs, which are present when a colony is reproductively mature (Harrison et al., 1984).
In contrast, the absence of this pink coloured band in the T region indicates the specimen contains a detectable amount of methamphetamine.
