Jhe Woburn Pot-Culture Experiments , 1913. 411 
Analyses of the two lots of manure were made and gave 
the following results as regards moisture and nitrogen : — 
Moisture Nitrogen 
Per cent. 'Per cent. 
Box I. (without hay) .... 75 - 82 ‘489 
„ II. (with hay) .... 74 - 21 '615 
It was noticeable that, in the case of the manure made 
with the additional hay, the straw was broken down very 
much more and the dung was distinctly better made. 
Rainfall at Woburn Experimental Station, 1913. 
(292 ft. above sea level.) 
* 1 
January 
Total 
Inches 
. 2-84 
No. of days 
with 01 in. 
or more 
recorded 
21 
July . 
Total 
Inches 
1-29 
No. of days 
with ’01 in. 
or more 
recorded 
15 
February 
. 1-06 
10 
August 
0-69 
9 
March 
2-50 
20 
September . 
1-65 
11 
April . 
. 2-36 
19 
October 
2-65 
16 
May . 
June . 
. 1-78 
12 
November . 
2-32 
19 
1-17 
8 
December . 
0-89 
14 
Total . 
21-20 
174 
POT-CULTURE EXPERIMENTS, 1913. 
I. Hills’ Experiments : — 
(a) The influence of Zinc Salts on Wheat. 
( b ) The influence of Copper Salts on Wheat. 
(c) The influence of Manganese and Cerium Salts on 
Wheat. 
II. The relation of Lime to Magnesia in Soils. 
The addition of Lime to a Soil rich in Magnesia. 
III. The use of Sulphur as a Fertiliser. 
IY. Experiments on Tomatoes. 
(a) On natural and heated Soil with addition of 
Lithium Phosphate. 
(b) On natural and heated Soil with addition of 
Magnesia. 
I. The Hills ’ Experiments — (a) The influence of Zinc 
Salts on Wheat. 
Experiments with zinc salts have been in progress since 
1909. The account of these up to 1912, inclusive, was published 
in the R.A.S.E. Journal for 1912. Up to then the indications 
