The guacharo is said to build a bowl-like nest of clay, in which it lays from two to four white eggs, with a smooth but lustreless surface, resembling those of some owls.
Up to this point the silk fibre continues to be comparatively lustreless, stiff and harsh, from the coating of albuminous matter (gum or gres) on its surface.
The supply of waste silk is drawn from the following sources: (I) The silkworm, when commencing to spin, emits a dull, lustreless and uneven thread with which it suspends itself to the twigs and leaves of the tree upon which it has been feeding, or to the straws provided for it by attendants in the worm-rearing establishments: this first thread is unreelable, and, moreover, is often mixed with straw, leaves and twigs.
The earlier wares were yellow, brown and red; then came deep greens and blues, followed by mat glazes and by "vellum" ware (first exhibited in 1904), a lustreless pottery, resembling old parchment, with its decoration painted or modelled or both.
Chantre in 1894 picked up lustreless ware, like that of Hissarlik, in central Phrygia and at Pteria, and the English archaeological expeditions, sent subsequently into north-western Anatolia, have never failed to bring back ceramic specimens of Aegean appearance from the valleys of the Rhyndacus, Sangarius and Halys.