Rainfall at Woburn Experimental Station , 1904. 205 
The “nothing” plot gave, as will be seen, no sound roots 
and much the smallest crop of any, all the applications having 
been more or less successful. The highest return and greatest 
weight of sound roots were obtained with the carbolised lime 
dressing, there being no useless roots at all. With ordinary 
lime (plot 2) the roots were all sound too. Gas lime (plot 4) 
gave excellent results, as did also finely-divided lime (plot 7a). 
Between basic superphosphate (plot 1) and ordinary lime 
(plot 2) there was, as in 1903, little to choose. The drilling in 
of lime with the seed (plot 6) was much more successful than 
in 1903, and the previous application of lime had by then 
probably had time to work. The good result now found with 
gas lime was noticed in 1902, but not in 1903 ; while basic slag, 
which did but poorly in 1902 and 1903, has now been much 
more effectual. 
Rainfall at Woburn Experimental Station, 1904. 
(292 feet above sea level.) 
7 
January 
Inches 
2*44: 
Number of 
days on 
which '01 
inch or 
more fell 
19 
July . 
Inches 
342 
Number of 
days on 
which ’01 
inch or 
more fell 
17 
February 
2-79 
18 
August 
2-32 
12 
March . 
1*49 
18 
September . 
1-59 
12 
April . 
1-05 
11 
October 
1T0 
16 
May . 
1-66 
14 
November . 
P12 
10 
June . 
1-12 
9 
December . 
1-98 
18 
— 
Total 
22-08 
174 
II. POT-CULTURE EXPERIMENTS, 1904. 
The Hills’ Experiments. 
In 1903 the subject for inquiry had been the influence of the 
iodides and oxides of manganese, potassium, sodium, and 
lithium on wheat and barley. In the case of wheat the salts 
were used in the solid state, the iodides at the rate of 1 cwt. 
per acre, and the oxides at 2 cwt. per acre. In every case, and 
more especially with manganese, the iodides, used at the rate 
of 1 cwt. per acre, were found to be harmful, whereas the 
oxides, at the rate of 2 cwt. per acre, all had a beneficial 
influence on the wheat crop. The results with barley were, 
in the main, similar, though the oxides did not prove so 
beneficial as with wheat, the iodides, however, showing the 
same injurious influence. Water-culture experiments con- 
ducted to supplement this inquiry showed that it was the 
roots of the plants that were chiefly affected by the different 
applications. 
