PUMP FOR LIQUID MANURE. 69 



One with a collapsing bucket, with leather sides and 

 of a conical form, shown in fig. 31, is the most useful. 

 The waste water from the roofs might be discharged 

 upon the heap by a simple arrangement of spouts. The 

 object desired, viz., to gather every soluble part of the 

 manure into the vat, should be forwarded by every possi- 

 ble means. 



A small and cheap tank suitable for use where the liquid 

 manure from the stables and dwellings may be collected 

 for distribution, may be excavated and lined with brick, 

 and should be circular with an arched roof ; if made 12 

 feet deep and 10 feet in diameter, it will contain 6,500 

 gallons, or sufficient to irrigate an acre with nearly three- 

 fourths of a quart to every square foot. 



Many other forms of tanks may be used for this pur- 

 pose. A capacious one may be constructed as follows : 

 A circular pit 24 feet in diameter and 8 or 10 feet deep is 

 excavated. The bottom and sides may be cemented or 

 lined with bricks laid in cement. A pillar of brick is 

 built in the center, and a brick arch may be sprung from 

 the pillar to the wall around it, or beams may be laid 

 from the wall to the pillar, centering at the pillar, and a 

 plank floor may be laid above them. A wide spout or 

 throat leading from the manure heap may carry the liquid 

 into the tank, and the drain pipes from the stables and 

 dwelling may be made to discharge into it. An en- 

 graving of this tank is given on page 37. Many ob- 

 vious modifications of this plan will occur to the reader. 



The distribution of liquid manure may be made, as al- 

 ready described, through pipes or open furrows, or by 

 means of irrigating carts or barrows. The use of carts 

 will be found to require a very small outlay at the begin- 

 ning, and to be much more satisfactory than would appear 

 at first sight. Where the distance to which the manure has 

 to be carted is within 400 feet, which would be from the 

 center to the outside limits of a square of about 15 acres, 



