Experiments on ilic. Growth of Wheat. 
31 
This table is sufllcientlj simple and intelligible to need no 
further remarks on my part. 1 therefore conclude this report on 
wheat experiments with an acknowledgment of the obligations 
under Avhich I am laid by Mr. Coleman, Professor of Agriculture 
in the Royal Agricultural College, for the practical assistance 
which he has kindly rendered me in carrying out the preceding 
experiments. 
Royal Agricultural College, Jan. 4, 1862. 
III. — Report of Experiments made at Rodmcrsham, Kent, on tite 
Growth of TFlieat bi/ different descriptions of Manure, for several 
years in succession on the same Land. By J. B. Lawes, F.R.S., 
F.C.S., and Dr. J. H. Gilbert, F.R.S., F.C.S. 
It is highly desirable, in a practical as well as scientific 
point of A"iew, to determine, by means of careful experiments, 
whether or not the action of particular manures on particular 
crops is substantially similar in different descriptions of soil, and 
in different localities. With a view to provide information on 
this subject, a series of experiments was commenced in 1851 by 
Mr. Keary, on the Home Farm of the Earl of Leicester, at 
Holkham, in Norfolk ; the results of which were published in 
this Journal in 1855 (vol. xvi., part 1). The crop selected was 
wheat, and the arrangement of the manures was the same as on 
some of the most important plots in the experimental field here at 
Rothamsted (Herts), in which wheat has been grown every year 
since 1844. Sir John M. Tylden, who is the president of an agri- 
cultural club in the neighbourhood of Sittingbourne, in Kent, the 
members of which are accustomed to make visits of inspection 
of experimental or good practical farming, some years ago 
induced the club to pay such a visit to Rothamsted ; after which 
they very liberally undertook to conduct, at their own expense, 
a sei'ies of experiments on the growth of wheat, the results of 
which would compare with those already obtained at Holkham, 
and with those of the experiments still in progress here at 
Rothamsted. 
Accordingly, a field of 3^ acres, at Rodmersham, about Si- 
miles from Sittingbourne, was set apart for the purpose, and 
divided into seven plots, of half an acie each, and the superinten- 
dence of the experiments was confided to Mr. George Eley, of 
Tong, who is the Secretary of the club. 
The soil of the experimental field is described by Mr. Eley as 
" a mixed clay, upon a chalk subsoil, lying from 4 to 6 feet below 
the surface." The previous course of crops and management had 
