On Permanent and Temporary Meadows and Pastures. 219 
It is easy to see, by comparison of these two analyses, that 
potash was the element which was deficient in the soil of the 
field. 
The following year rye was sown, some without manure and 
some with a potash-manure. The results obtained left no 
further doubt as to the correctness of the opinion drawn from 
the analyses. 
At the flowering-time the rye was very irregular in height, 
according as it had, or had not, received a dose of the potash- 
salts. I took samples of both, which were analysed with the 
following results : — 
No. 2. 
No. 3. 
No. 4. 
JIauuve Employed. 
No. 1. 
Xonc. 
Nitrate of 
I'otasil, 
3-17 cwt. to 
acre. 
Sulphate of 
PoUsh, 
3-17 cwt. to 
acre. 
Chloride 
of I'otassium, 
2- lit cwt per 
acre. 
Mean weiglit of diied stalk 
Nitrogen in 1000 parts dry 
Phosphoric acid , , 
Lime , , 
Magnesia , , 
Potash 
Grains. 
10-215 
12- 910 
5-000 
14-370 
13- 400 
5-290 
Grains. 
24-928 
8- 401) 
4 -620 
24-530 
1-770 
9- 720 
Grains. 
22-747 
9-710 
4-950 
10-450 
2-280 
8-090 
G rains. 
24-167 
6-750 
5- 420 
6- 890 
1-770 
9-OSO 
The rye therefore gave the same result as the wheat. Every- 
where where potash was present, the returns were doubled or 
trebled ; and in the plant itself, the proportion of potash was 
very nearly doubled, while the greater part of the other elements 
were in lessened proportions. Sirce that time the field has 
always been cultivated with potash-manure, and it has invari- 
ably produced good cereal and even beetroot-crops, which latter 
require more potash than most other crops. 
Second Example. — In November 1877, having been consulted 
by M. de Hedouville, a landowner at Chantiily (Oise), as to 
what could be done to better the condition of a very unproduc- 
tive piece of old grass-land, I asked for a sample of the soil and 
analysed it. This analysis gave me the results shown at No. 23 
of the table of analyses of soils, and which I reproduce here. 
In 1000 parts. 
In 1 Acre, 
7 •874 Inches deep 
(= 20 Centimetres). 
Phosphoric acid 
Magnesia 
10-07 
-93 
325-85 
7-31 
•22 
Tons. 
16-03 
1-48 
519-03 
11-64 
-35 
