1897 - 98 .] Thermodynamics of Volta-contact Electricity. 125 
above), the quasi-Peltier effect at the interfaces gold-air and air- 
zinc in the Volta circuit would be 799 times the Peltier effect at 
the zinc-gold interface, if the preceding figure 800 were exact. 
The sign of the quasi-Peltier effect for gold-zinc is such that on 
the whole heat is produced by vitreous electricity travelling from 
gold to gold-air frontier, and an equal quantity of vitreous elec- 
tricity from air-zinc frontier to- zinc ; and, on the whole, cold is 
produced by equal electric motions in the opposite direction. 
