Cutting through the poppy-head caused the shrivelling up of the young fruit, but the heads which had been carefully incised yielded more seed than those which had not been cut at all.
Clay tablets and discs (so far in Crete only), but nothing of more perishable nature, such as skin, papyrus, &c.; engraved gems and gem impressions; legends written with pigment on pottery (rare); characters incised on stone or pottery.
It closes with the introduction of incised, white-filled decoration on pottery, whose motives are presently found reproduced in monochrome pigment.
No figures of birds, however, seem yet to have been found on the incised stones, bones or ivories of the prehistoric races of Europe.
In later examples it is incised in the marbles, the letters being rendered clearer by being coloured with vermilion.