MANURING EXPERIMENTS WITH PADDY RICE (SECOND YEAR). 
35 
In all cases in which the double doses ( b ) of nitrogen were 
applied, the produce of grain and particularly of straw showed 
a remarkable increase over the plots with the single doses (n) 
but there is no exact proportionality of the increases caused by 
the two doses over those plots which were not supplied with 
nitrogenous manure. While the small quantities of the 
fertilizers were enabled to exert their maximum effect on the 
produce, the large doses were not so well utilized, and they 
displayed accordingly only a fraction of their effect. As the 
value of fertilizers for paddy fields will always be determined 
by their action on the produce of hulled grain, we give in the 
following table 21 the increases of this product caused by the 
small doses of nitrogen over the plots not manured with this 
nutrient, and in order to compare the values of the various 
fertilizers we add in the last column the “ relative increases,” 
the effect of the night-soil being reckoned as ioo. 
2i In this compilation the increase caused by the Peruvian guano (4.95 
grms. nitrogen) is reduced to the increase corresponding to the amount of 
nitrogen (3.95 grms) applied in the other kinds of manures. The flesh meal 
which had been charred during its preparation and was accordingly unable 
to display a normal action, is excluded from further discussions. 
