Perite vs Kerite - What's the difference?
perite | kerite |
(obsolete) skilled
* 1820 , Blackwood's magazine (volume 7, page 668)
A compound in which tar or asphalt combined with animal or vegetable oils is vulcanized by sulphur, the product closely resembling rubber; formerly used as an insulating material in telegraphy.
(Webster 1913)