608 
Additional Remarks on 
elements in good pastures, though it would be dangerous to the 
health of the stock to allow them so to exceed their proper 
proportions as to compel the stock from hunger to eat them. I 
have, therefore, avoided recommending the introduction of any 
of these plants into pastures, with the exception of yarrow, 
which I still hold to be of great value. My own observations 
on other plants occasionally eaten by stock are not yet suffi- 
ciently extensive to justify my drawing conclusions ; but I hope 
to continue them, and would be glad to receive communications 
from any who have made observations on this subject. 
I trust that the experiments at Woburn and Rothamsted will in 
time be able to determine exactly the question of permanency in 
the clovers. I have formed an opinion for myself; but when I 
found eminent authorities differing on the subject, I preferred 
in my last article to recommend the four clovers to be sown in 
accordance with the seed-merchants' circulars and I may add 
that having used that quantity of those four clovers, I have not 
been dissatisfied with the results. 
In my former article the estimate of the number of seeds in 
the lb. was taken from Sinclair in all cases in which he supplied 
the data ; the number of seeds in each lb. given by other autho- 
rities differ from those of Sinclair, and also from examinations 
made on my own account. Although a knowledge of the correct 
number of seeds in each lb. is important, yet as I have calcu- 
lated the lbs. per acre for each grass in accordance with Sinclair's 
basis, and have in practice found the results very satisfactory, 
the number of lbs. of each grass to be used per acre would remain 
the same, even though it should be established that Sinclair's 
calculations were not correct. And any such new calculations 
must be on an extensive scale, for one must bear in mind the 
great differences that are caused by the quality and size of the 
seeds. 
I farm upwards of 900 acres, in which there is very good 
land, moderate land, poor chalky banks, and gravel ; but no 
wet land. I have come to the conclusion, from my own experi- 
ments and the observations I have made in many parts of 
England, Scotland, and the Continent, that in laying down to 
pasture on all lands the selection should be made from the grasses 
I mentioned in my former article ; and that, as on a violin all 
tunes must be played upon the limited number of strings in 
that instrument, so in laying down land to grass, all pastures 
ought to be formed of this limited number of grasses. 
There can be little doubt that the country is gradually getting 
worn out : from our meadows having been ploughed up, from hay 
being continually removed from them, or from the continual 
production of milk. One great question of the day, in my opinion, 
