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To Measure Corn in the Crib

Corn is generally put up in cribs made of mean height, the mercury begins to rise steadrails, but the rule will apply to a crib of any ily and slowly, fine weather will come, though size or kind. Two cubic feet of good, sound, 2 or 3 wet days may first elapse; and the fine dry corn in the ear, will make a bushel of weather will be the more permanent, in proof weather will be the more permanent, in proshelled corn. To get, then, the quantity of portion to the length of time that passes shelled corn in a crib of corn in the ear, mea- before the perceptible change takes place.

III. On either of the two foregoing suppositions, if the change immediately ensues on the motion of the mercury, the change will not be permanent.

IV. If the barometer rises slowly and steadily for two days together, or more, fine weather will come, though for those two days it may rain incessantly, and the reverse; but if the barometer rises for two days or more during rain, and then, on the appearance of fine weather, begins to fall again, the fine weather will be very transient, and vice versa.

V. A sudden fall of the barometer in spring or autumn indicates wind; in summer, during very hot weather, a thunder-storm may be expected; in winter, a sudden fall after frost of of some continuance indicates a change of wind with thaw and rain; but in a continued frost a rise of the mercury indicates approaching snow.

VI. No rapid fluctuations of the barometer are to be interpreted as indicating either dry or wet weather of any continuance; it is only the slow, steady, and continued rise or fall, that is to be attended to in this respect.

VII. A rise of the mercury late in the autumn, after a long continuance of wet and windy weather, generally indicates a change of wind to the northern quarters, and the approach of frost. 6133. Melting or Boiling Point of Met- Degrees Fahr. als, Liquids, &c. 3080° Platinum melts. 2786 Cast iron melts; 2696° (Morveau). 2500 Steel melts. 2016 Gold melts (Daniell); 2200° (Kane). 1996 Copper melts (Kane); 2548° (Daniell). 1873 Silver melts (Makins); 2233° (Daniell). 1860 Brass melts (Daniell). 1000 Iron, bright cherry red (Foillet). 930 Iron, red heat (Daniell). 914 Zine burns (Daniell). 810 Antimony melts. 773 Zinc melts (Daniell); 793° (Gmelin). 644 Mercury boils (Daniell); 662°(Graham). 218 216 213 212 199 194 185 180 176 173 151 150 145 140 136 132 130 122 120 116 boils.

Saturated solution of sal-ammoniac Sulphur melts (Fownes); 232° (Turner).

Saturated solution of alum, carbonate of soda, and sulphate of zine boils.

Saturated solution of chloride of potassa boils.

Saturated solution of sulphate of iron, sulphate of copper, and nitrate of lead boils.

Water begins to boil in glass (or 2135°).

Water boils in metal, barometer at 30 inches.

Milk boils.

Sodium melts.

Nitric acid, specific gravity 1.52, boils.

Starch dissolves in water.

Rectified spirit boils. Benzole distills.

Alcohol, specific gravity 796 to 800, boils.

Bees'-wax melts (Kane); 142° (Lepage).

Scalding heat. Pyroxylic spirit boils (Scanlan).

Albumen coagulates.

Chloroform and ammonia, specific gravity .945, boils. Potassium melts (Daniell).

Acetone (pyroaceticspirit) boils (Kane).

Butter melts (130° to 140°).

Mutton suet and styracine melts.

Phosphorus inflames. Friction matches ignite.

Bisulphuret of carbon boils (Graham). 112 Spermaceti and stearine melt. 111 110 Beef tallow melts.

Highest temperature of the human body (in lockjaw). 106 Mutton tallow melts. 99 99 Phosphorus melts (99° to 100°). 98 Ether, specific gravity .720, boils.

Blood heat. 88 Acetous fermentation ceases. Water boils in a vacuum. 1 81 Mean temperature at the equator. 77 Vinous fermentation ends; acetous begins. 67 Lowest temperature of the human 630 Whale oil boils (Graham). 612 Lead melts (Crighton); 609° (Daniell). body (in cholera). 65 Best temperature of a room (65 to 68). 530 Sulphur ignites. (Graham). 476 Bismuth melts (Phillips);518°(Gmelin). 442 Tin melts. 380 Arsenious acid volatilizes. 600 Linseed oil boils. 545 Sulphuric acid boils (Phillips); 620° 62 Oil of anise liquefies; congeals at 60°. 50Mean temperature at London. 42 Sulphuric acid, specific gravity 1.741, congeals (41° to 42°). 41 Mean temperature of Edinburgh. 60 Mean temperature at Rome. 36 Olive oil freezes. 372 Saturated solution of nitrate of ammo- 32 Water freezes. nia boils. 30 Milk freezes. 356 Metallic arsenic sublimes. 28 Vinegar freezes. 336 Saturated solution of acetate of potassa boils. 320 Cane sugar melts, 320° to 400°, baking heat of an oven. 315 Oil of turpentine boils (Kane). 304 Saturated solution of nitrate of lime boils. 302 Etherification ends. 275 Saturated solution of carbonate of potash boils. 256 Saturated solution of acetate of soda boils. 248 Nitric acid, specific gravity 1.42, boils. 238 Saturated solution of nitre boils.

Strong wine freezes. 4 Mixture of snow and salt. -39 Mercury freezes (30° to 40°). (Sce also Nos. 7,3353, 3459 and 1687, sc). 6134. Weight of Earth, Rocks, &c.

A cubic yard of sand or ground weighs about 30 cwt. Mud, 25 cwt. Marl, 26 cwt. Clay, 31 cwt. Chalk, 36 cwt. Sandstone, 39 cwt.

Shale, 40 cwt. Quartz, 41 cwt. Granite, 42 cwt. Trap, 42 cwt. Slate, 43 cwt.

To find the weight of a cubic foot of any of the above, divide the weight of a cubic yard 20 7 Brandy freezes. by 27. Thus, a cubic foot of sand weighs 6136. Table of the Relative Hardness , or 14 cwt., equivalent to about 124 pounds. and Weight of the Principal Precious