AMERICAN INSTITUTE. 467 



expense, but for wliich the extra produce amply compensates, and 

 this is strange, when it is known that a quantity of water equal 

 to the fall from a heavy thunder shower may be distributed by 

 engine power at an expense of a few cents per acre. 



Pumping in large quantities through ten miles in length of 

 closed pipe is in practice abroad, and no limits have yet been 

 ascertained to the possible extent of distribution by such means. 

 The results continuously obtained beyond all agricultural prece- 

 dent, even of the highest market garden cultivation, having been 

 obtained by means of liquid manuring, there is little danger of 

 failure from the prosecution of similar work by new and untried 

 hands. 



Eut the determination of the best seasons and times, and with 

 what degrees of dilution liquid manures may be applied, and in 

 what intervals of -rain or of applications of simple water, are 

 points of skill to be acquired by further experience, for which at 

 the present time the best guide is to be found in the practice of 

 horticulturists. 



AMOUNT OF MANURE APPLIED TO AN ACRE OF LAND. 

 Two acres of land contain eighty-seven thousand one hundred 

 and twenty square feet, nine thousand six hundred and eighty 

 square yards, or three hundred and twenty square rods. Six 

 hundred pounds of guano would be sufficient for two acres ; four 

 hundred and four pounds would give an ounce avoirdupois to each 

 square yard. Two cubic yards of night soil, would manure tAvo 

 acres well. Three hundred and forty barrels of liquid manure, 

 would give a gill to each square foot. Four hundred pounds of 

 Peruvian guano will cause two acres of land to yield, if in ordi- 

 nary condition, four thousand four hundred and eighty pounds of 

 oats — equal to one hundred and forty bushels. Five hundred 

 pounds of Ma23es' superphosphate of lime on two acres will cause 

 it to yield three thousand four hundred and thirty pounds of oats: 

 equal to about one hundred and fourteen bushels. Four hundred 

 and sixty pounds of bone earth on the same quantity of land will 

 yield three thousand three hundred and sixty pounds — about 108 

 bushels. Twenty-four dollars worth of barn yard manure will 

 cause two acres to yield 1,520 lbs. of carrots; twenty-four dollars 



