INFLUENCE OF MANURES ON GRASS LAND. 155 

the exceptions being Glasson, Brampton, and Kirkbampton, 
where it was either very scarce or altogether absent. Table 
III., which deals with the behaviour of cocksfoot at the stations 
constituting Set 1, therefore, contains details of three places, 
while Table IV. shows the figures for two stations only— 
namely, Gosforth and Wigton. 
The Lnfiuence on Cocksfoot of Nitrate of Soda—While the rela- 
tionship of cocksfoot and subsequent plants to this and other 
manures might be examined in as much detail as in the case 
of Agrostis, it will probably be sufficient if the results are 
stated somewhat more generally. 
Neither alone nor in combination has nitrate of soda had 
any very conspicuous influence on this piant. 
At the two stations of Set 2, referred toin Table IV., nitrate 
of soda, where used in varying quantities, has to a slight 
extent increased the percentage of cocksfoot (compare Plots 
2, Tiel Oi 
The Influence on Cocksfoot of Nttrate of Soda as compared wrth 
Sulphate of Ammonia (Plots 10 and 12, Table IIL)..—The 
results obtained here show that nitrate of soda has produced 
the larger percentage of cocksfoot twice out of three times. 
This is in contormity with general experience, the result being 
due to the fact that nitrate of soda sinks more quickly and 
deeply into the soil than sulphate of ammonia, and is thus 
brought more thoroughly into contact with the roots of deep- 
rooted plants, such as cockstoot. 
The Influence on Cocksfoot of Superphosphate—When used 
alone, or when added to kainit, super. never failed to diminish 
the percentage of cocksfoot. Under other circumstances the 
action of this manure is not so pronounced, but, on the 
aggregate of twelve tests at the three stations of Set 1, super. 
has reduced the percentage of cocksfoot nine times. 
Varying amounts of superphosphate (Plots 2, 3, 4, Table 
IV.) have not had inuch effect on the relative abundance of 
cocksfoot. 
The Influence on Cocksfoot of Superphosphate tn Comparison 
with Basic Slag.— At the five stations concerned a given 
amount of phosphoric acid has seven times out of eight pro- 
duced a greater percentage and weight of cocksfoot when in 
