How, indeed, could they ever have imagined that Pyro and the half-breed had got hold of a boat and made their escape from Tsalal Island?
"An Antarctic Mystery"
Jules Verne
When electricity develops under the influence of heat, or is in any way connected with a rising or falling of temperature in a body, it is called "Pyro-electricity," from the Greek word "Pyros," fire.
"The Chemistry, Properties and Tests of Precious Stones"
John Mastin
From this it will clearly be seen how simple a matter it is to isolate the topaz, tourmaline, and all the Pyro-electric stones from the non-Pyro-electric, for science has not as yet been able to give to spurious stones these same electric properties, however excellent some imitations may be in other respects.
"The Chemistry, Properties and Tests of Precious Stones"
John Mastin