IRRIGATION. 165 



Immediately after each of these crops, the land was watered 

 once from a London street water-cart, with one part of pure urine 

 from the stables and two parts of water, the produce of each 

 crop increasing with the temperature of the atmosphere from 

 three quarters of a load per acre as hay to three loads per acre. 

 The crop having shed a quantity of seed, he was doubtful the 

 urine might injure its growing ; so discontinued to water, but well 

 harrowed it with iron harrows, and left it, expecting nothing 

 more from it. It produced, however, three or four light crops 

 afterwards. 



In 1845, his first cutting was on the . 6th of April ; 



his second, 3d of May ; 



his third, 9th of June. 



On the 22d of September, the fourth crop on the land meas 

 ured three feet ; the sixth crop, on land which had been previously 

 mown five times, measured one foot and a half. 



On the 26th of January of this year, 1846, I saw some rye 

 grass, which had been cut two or three days previously from his 

 fields, which measured 16 inches in length. This same field 

 was mowed October 30th of the last year. It has been cut 

 again the 8th of this month, (April,) 22 inches long. 



Mr. Dickenson says that, when he has wished to relieve the 

 tanks in the winter season, he has put on pure urine with excel 

 lent effect. He has also put on two parts urine and one water, 

 and one part urine and one water, and two parts water and one 

 urine. He is disposed to think, if there is such a quantity of 

 urine as to render it indifferent how much is used, it may be 

 applied pure to that description of grass, on almost all occasions, 

 with success ; but the effect would be greater on the land and 

 plant in proportion to the temperature of the atmosphere. He 

 advises to dilute more as the temperature rises, and for ordinary 

 grasses to the extent of five or six parts of water. For the 

 clover he thinks it ineffectual. 



I was solicitous to know the actual amount of grass or hay 

 probably obtained from an acre. He took the trouble to weigh 

 accurately the produce of a yard square, of the fifth crop of 

 grass of the season : and the following is his reply to me : 



&quot; A yard of grass, cut in the presence of Cap 

 tain Duller, weighed Ibs. 5f 



Dried 12 days in the open air &quot; 2f 



