Air furnace melts.....................3300 above zero.

Antimony melts........................ 950

Bismuth melts......................... 476

Brass melts..... . ,...................1900 "

Cadium melts........................ 600

Cast Iron melts........................3479 "

Copper melts.........................2160

Gold melts............................1983 "

Glass melts.......... .................2377 "

Gutta Percha melts.................... 150 "

Iron, wrought, melts...................3980 "

Iron, bright red heat in the dark........ 752 "

Iron, red hot in twilight................ 884 above zero

Heat, cherry red.......................1500 "

Heat, bright red......................1860

Heat, red, visible by day...............1077 "

Heat, white...........................2900 "

Lead melts............................ 590 "

Lard melts............................ 96

Silver melts...........................1850 "

Steel melts...........................2500 "

Platinum melts........................3080 "

Tin melts............................. 424

Zinc melts............................... 740 "

Ice melts.............................. 35 "

The Specific Gravities Of Bodies

Barometer, 30 inches; Fahrenheit's Thermometer, 6o° (From the Work of Drs. Thompson, Young and Ure)

Platinum.................22.069

Gold.....................19.360

Quicksilver...............13.568

Lead.....................11.352

Silver....................10.474

Copper................... 8.878

Brass..... .............. 8.396

Brick.................... 2.000

Nitre..................... 1.900

Ivory.................... 1.825

Brimstone................ 1.810

Coal...................... 1.250

Boxwood.................. 1.030

Sea Water................ 1.026

Common Water............ 1.000

Steel.......................7.833

Iron (cast)................7.645

Tin..........................7.320

Glass (crystal).............3.150

Granite...................3.000

Marble (Parian)............2.838

Flint......................2.570

Oak (English)...............760

Walnut....................671

Cedar......................613

Elm.......................600

Willow....................585

Fir........................550

Poplar......................383

Cork......................240

Degrees Of Cold At Which The Following Articles Freeze

Milk freezes.................................29 above zero

Strong wine freezes...........................20 "

Water freezes................................ 32 "

Turpentine (spirits) freezes...................15 "

Degrees Of Heat At Which The Following Articles Boil

Alchohol boils...............................175 above zero

Blood Heat.................................. 98

Linseed Oil boils.............................GOO

Petroleum boils..............................305

Quicksilver boils............................622 "

Quicksilver volatilizes........................680 "

Water boils................................210

Water in vacuo boils........................ 98 "