Heat

The extreme summer heat, of course, varies in different places with latitude, altitude, etc. Roughly, the extreme varies from about i£o° F. in Bengal to 340 F. in Nova Zembla. In Britain it is about 8z°. Ice melts at 320 blood heat is 98° alcohol boils at 1740, and water; at 2120 lead melts at 5940 bra at 2233°, and iron at 3479 0;