Entire packs of ceylonese species will, at the slightest alarm, become invisible by crouching on a palm-tree.
"The Human Side of Animals"
Royal Dixon
The ceylonese Scimitar Babbler.
"The Nests and Eggs of Indian Birds, Volume 1"
Allan O. Hume
It should, however, be mentioned that this stone is referred to when the names ceylonese and Oriental cat's-eye are given, which names are used in the trade as well as the simple appellation, "cat's eye."
"The Chemistry, Properties and Tests of Precious Stones"
John Mastin