212 FOOD FOR PLANTS 



Distance No. of Distance No. of 



Feet. Plants. Feet. Plants. 



3 4,840 18 134 

 3^ 3,556 20 108 



4 2,722 24 75 



5 1,742 25 69 



6 1,210 28 55 



7 889 30 48 



8 680 



Tables of Weights and Measures. 



Avoirdupois Weight. 



16 drams =1 ounce 



16 ounces = 1 pound 



7,000 grains ==1 



14 pounds =1 stone 



100 " ^1 hundredweight 



or central 

 20 hundredweight =1 ton 



Dry Measure. 



2 pints =1 quart 



8 quarts =1 peck 



4 pecks = 1 bushel 



Liquid Measure. 



4 gills =1 pint 



2 pints =1 quart 



4 quarts =1 gallon 



A cubic foot of water weighs almost 1,000 oz., and con- 

 tains almost 6^4 gallons. 



Surface, Square or Land Measure. 



144 square inches == 1 square foot 



9 square feet =1 square yard 



30^4 square yards =1 square rod 



160 square rods or 4,840 sq. yards =1 acre 



10 square chains ==1 acre 



640 acres =1 square mile 



