90 
ROTAL HOETICULTURAL SOCIETY. 
for leguminous crops than ammonia-salts, and which distributes 
more rapidly, was also liberally applied. Owing to the cha- 
racter of the season, the mechanical condition of the land was 
very unfavourable after this treatment ; and, although many years 
have now elapsed, and the excess of constituents supplied is in 
some cases considerable, the plant has died off as completely on 
the plots so treated as elsewhere. 
In view of these failures in the field, it is a fact of much in- 
terest that in 1854 Ked Clover was sown in a garden only a few 
hundred yards distant from the experimental field, on soil which 
has been under ordinary garden-cultivation for probably two or 
three centuries, and it has every year since shown very luxuriant 
growth ; and after resowing four times, namely, in 1860, 1865, 
1868, and 1870, during that period, there is at the present time 
not only no indication of failure, but, on the contrary, very luxu- 
riant growth. It may be added, by way of illustration merely, 
that if the produce on these small garden plots be calculated to 
the acre, it would represent a removal in seventeen years, at the 
rate of more than 1| ton of lime, nearly | ton of magnesia, 
more than a ton of potass, nearly ^ ton of phosphoric acid, and 
about H ton of nitrogen per acre, without the supply of any of 
either during the period of the experiment. 
Lastly, in the winter of 1867-68, small portions of the land of 
series 1 were dug, some to the depth of 9 inches, some to the 
depth of 18, some to the depth of 27, and some to the depth of 
36 inches, and sown to the respective depths with different ma- 
nurial mixtures ; supplying in some cases very large amounts of 
potass, soda, lime, magnesia, phosphoric acid, sulphuric acid, ni- 
trate of soda, &c. From other similarly sized plots, the soil was 
removed to the depth of 9, 18, and 27 inches respectively, and 
replaced by soil from the same depths from the garden border, on 
a portion of which clover had been grown successfully since 1854, 
as above referred to. In April 1868, clover was sown over the 
whole of these small plots, as well as over the rest of the land of 
series 1 not so treated ; but the plant for the most part died off 
during the winter. The same portions were resown in April 
1869, and small quantities of clover were cut in September of 
that year ; but the plant again died off in the winter. In April 
1870, clover was again sown, this time in conjunction with 
barley ; but the plant again died off during the past winter and 
early spring. This result should not, however, at present be 
