Growth of Red Clover by different Munnvcs. 
As in the case of the last crop of Clover, that of 1855, the year 
after the heavy dressing of Farmyard manure on one-third, and of 
Farmyard manure and Lime on another third of the experim(!ntal 
land, the so-manured portions, again, in 185*J, yield a some- 
what larger crop than the corresponding plots of Series 1, which 
had no such application. The plots of each Series, however, 
yield somewhat more produce in 1859, than they did in 1855. 
The crops are, however, in all cases, insignificant, being gene- 
rally equ.al to not much more than 1 ton of hay per acre ; but 
there is still slight indication of improvement where the mineral 
manures containing potash, or potash and phosphoric acid, had 
been liberally employed in the earlier years of the experiment 
The plant continued to look tolerably well throughout a good 
part of the winter (1859-GO), but as the spring advanced it died 
oft" rapidly, and, at the time we write, the end of June, the small 
proportion of the original plants that still survive have a very 
stunted and unhealthy appearance. 
From the numerous results which have been recorded, in the 
foregoing pages, of experiments in which Clover has been sub- 
mitted to a very great variety of manurial, and other conditions 
of growth, it is evident that no direct supply of manure, in the 
ordinary form of farmyard dung, or of the current artificial 
manures, is capable of restoring the soil from which a heavy crop 
of Clover has been taken, to a condition of immediate productive- 
ness for the same crop. In the experiments in question, not even 
the most complex conditions, and the repeated supply of those 
constituents which are found most to increase the Clover-crop 
when it is grown in the usual manner, after an interval of several 
years, have restored the Clover-yielding capabilities which the 
soil possessed at the commencement of the experiment, in 1849. 
Before entering upon any consideration of the probable causes 
of the failure of the Clover in the experiments which have been 
already described, it will be well to give the results of some 
experiments conducted on a small scale in the kitchen-garden 
at Rothamsted. The soil was in ordinary garden cultivation, 
and has probably been so for two or three centuries. Early in 
1854, gi^y of an acre (about 9f square yards) was measured off and 
sown with Red Clover, on March 29. From that time to the end 
of 1859, fourteen cuttings have been taken, without any re-sowing 
of seed. In 1856, this little plot was divided into three equal 
portions. Of these. No. 1 has been kept continuously without 
manure ; No. 2 was manured with gypsum ; and No. 3 with 
sulphates of potash, soda, and magnesia, and superphosphate of 
lime. Table VIII. shows the amount of produce obtained, both 
green, as cut, and calculated as hay, per acre ; but as the space 
VOL, XXI, - O 
