46 EXPERIMENTS 



ed state, eight, nine, and ten years ; and replaced by 

 others planted in large and shallower holes ; the latter 

 plantations grow much faster than the former. A few 

 years ago, I began to dig around the trees, circles of 

 four to six feet in diameter ; and the last summer, after 

 mowing the first crop, I had five furrows ploughed on 

 each side the rows^ which appears to have improved 

 them; the whole orchard, of about 340 trees on 19 

 acres, now looks well, and as I shall cultivate the 

 ground in corn the following season, 1808, I have 

 now the most favourable expectations of their contin- 

 uing to thrive. 



This orchard is now (1816) in high order, and is 

 improving yearly, under the quinquennial rotation of 

 crops which I have adopted on my farms neverthe- 

 less, there is a decided inferiority in a few acres which 

 were the site of an antient orchard notwithstanding 

 the rows of my young orchard occupied the middle 

 space, and did not approach the roots of the old 

 trees, which have many years been cut down, and 

 are now entirely decayed. 



EXPERIMENT NO. g. 



In November 1802, 1 began an orchard adjoining 

 to No. 1; which, in the two following autumns, I en- 



