Most of the tables and estimates that the farmer needs in his "figuring " will be found in this chapter ; but greenhouse computations will be found in Chapter XI, silos and other construction in Chapter XXV, and board measure and log measure in Chapter XII.

Tables of Regular American Weights and Measures

Avoirdupois or commercial weight

271/3 1/2 grains...............=1 dram.

16    drams...............= 1 ounce.

16    ounces...............=1 pound.

25    pounds...............=1 quarter.

4    quarters, or 100 pounds.........=1 hundredweight.

20    hundredweight, or 2000 lb.........=1 ton.

480    pounds...............=1 imperial quarter.

100    pounds is also called..........1 cental.

2240   pounds...............=1 long ton.

Chapter XXVII Computation Tables 196

Troy or jewelers weight

24 grains ................=1 pennyweight.

20 pennyweights ..............=1 ounce.

12 ounces................=1 pound.

Chapter XXVII Computation Tables 197

Apothecaries' weight

20 grains................  =1 scruple.

3 scruples................  =1 dram.

8 drams................  =1 ounce.

12 ounces................  =1 pound.

Chapter XXVII Computation Tables 198

Table of comparative weights

Chapter XXVII Computation Tables 199

Dry measure

2 pints.................=1 quart.

8 quarts................=1 peck.

4 pecks.................=1 bushel.

8 bushels (480 pounds)...........=1 quarter.

36 bu................ . . = 1 chaldron.

Chapter XXVII Computation Tables 200

Liquid measure

4 gills................=1 pint.

2 pints................=1 quart.

4 quarts...............=1 gallon.

311/2 gallons...............=1 barrel.

2 barrels, or 63 gallons...........=1 hogshead.

Chapter XXVII Computation Tables 201

Apothecaries fluid measure

60 minims................=1 fluid dram.

8 fluid drams...............=1 fluid ounce.

16 fluid ounces..............=1 pint.

8 pints .................=1 gallon.

Chapter XXVII Computation Tables 202

1 minim equals 1 drop of water.

Line or linear measure

12 inches...............=1 foot.

3 feet.....,..........=1 yard.

51/2 yards, or 161/2 feet...........=1 rod or pole.

40 rods................= 1 furlong.

8 furlongs (320 rods)...........= 1 mile (statute mile).

3 miles................=1 league.

Chapter XXVII Computation Tables 203

Surveyors' or chain measure

7.92 inches...............  =1 link.

25 links................  =1 rod or pole.

4 rods, or 66 feet............  =1 chain.

80 chains...............  =1 mile.

Chapter XXVII Computation Tables 204

Square or surface measure

144 square inches.............=1 square foot.

9 square feet..............=1 square yard.

301/4 square yards.............= 1 sq. rod or perch.

160 square rods.............=1 acre.

640 acres ...............= 1 sq. mile or section.

Chapter XXVII Computation Tables 205

Surveyors' square measure

625 square links . ........... .= 1 square rod or pole.

16 poles...... ........= 1 square chain.

10 square chains.............=1 acre.

640 acres ................= 1 sq. mile or section.

36 square miles (6 miles square)........=1 township.

Chapter XXVII Computation Tables 206

Solid or cubic measure

1728 cubic inches.............  =1 cubic foot.

27 cubic feet..............  =1 cubic yard.

16 cubic feet..............  =1 cord foot.

8 cord feet, or 128 cubic feet........  =1 cord of wood.

243/4 cubic feet..............  =1 perch.

Chapter XXVII Computation Tables 207