52 RODNEY H. TRUE AND HARLEY HARRIS BARTLETT 
the roots. In the cases of five out of fifteen of the solutions which 
contained all three salts, the absorption exceeded that in the solution 
of Ca(N03)2 alone. These five solutions in order of magnitude of 
absorption, beginning with the greatest, were as follows: 
60 N X 10- 
^ KNO3 
40 N X 10- 
Ca(N03)2 
: 40 N X 10- 
sMg(N03)2 
20 
KNO3 
100 " 
Ca(N03)2 
: 20 " 
Mg(N03)2 
20 
KNO3 
40 
Ca(N03)2 
: 80 
Mg(N03)2 
40 
KNO3 
60 
Ca(N03)2 
: 40 
Mg(N03)2 
60 
KNO3 
60 
Ca(N03)2 
: 20 " 
Mg(N03)2 
From the remaining solutions absorption was less than from the simple 
Ca(N03)2 solution. It is likely that a repetition of this experiment 
Table II. 
Composition 
Daily Concentration Relations 
KH2PO4 
»^a^^±M \J3)2 
MgS04 
3 
4 
140 NXlO~6' 
0 NXio~^ 
0 NXio~^ 
1 .000 
I 017 
1.078 
I 07Q 
1.052 
120 " 
20 " 
0 " 
1 .000 
0 067 
0 QI7 
0.820 
0 71^8 
120 " 
0 " 
20 " 
1. 000 
I.OI8 
1.036 
0.973 
100 " 
40 
0 " 
1. 000 
1.003 
0.969 
0.879 
0.812 
100 " 
20 " 
20 " 
1. 000 
1.005 
0.952 
0.849 
0.783 
100 " 
0 " 
40 
1. 000 
1. 012 
1.005 
0.958 
0.902 
80 
60 
0 " 
1. 000 
0.994 
0.942 
0.864 
0.797 
80 
40 
20 " 
1. 000 
0.976 
0.942 
0.835 
0.760 
80 
20 " 
40 
1. 000 
0.974 
0.903 
0.779 
0.691 
80 
0 " 
60 
1. 000 
1.005 
0.983 
0.910 
0.890 
60 
80 
0 " 
1. 000 
0.997 
0.959 
0.873 
0.821 
60 
60 
20 " 
1. 000 
0.985 
0.931 
0.825 
0.761 
60 
40 
40 
1. 000 
0.977 
0.899 
0.764 
0.683 
60 
20 " 
60 
1. 000 
0.972 
0.887 
0.755 
0.674 
60 
0 " 
80 
1. 000 
1. 02 1 
0.997 
0.923 
0.876 
40 
100 " 
0 " 
1. 000 
1.022 
0.965 
0.903 
0.834 
40 
80 
20 " 
1. 000 
1.022 
0.947 
0.830 
0.761 
40 
60 
40 
1. 000 
1.008 
0.945 
0.826 
0.747 
40 
40 
60 
1. 000 
0.993 
0.933 
0.810 
0.727 
40 
20 " 
80 
1. 000 
0.997 
0.932 
0.798 
0.706 
40 
0 " 
100 " 
1. 000 
1.037 
1.034 
0.986 
0.957 
20 " 
120 " 
0 " 
1. 000 
1.034 
1.009 
0.946 
0.908 
20 " 
100 " 
20 
1. 000 
1.005 
0.930 
0.808 
0.752 
20 " 
80 
40 
1. 000 
1. 016 
0.934 
0.806 
0.734 
20 " 
60 
60 
1. 000 
0.997 
0.920 
0.775 
0.705 
20 " 
40 
80 
1. 000 
0.999 
0.901 
0.749 
0.652 
20 " 
20 " 
100 " 
1. 000 
0.997 
0.913 
0.730 
0.624 
20 " 
0 " 
120 " 
1. 000 
1.023 
1.007 
0.951 
0.929 
0 " 
140 " 
0 " 
1. 000 
1-075 
1.083 
1.051 
1.040 
0 " 
120 " 
20 " 
1. 000 
1. 061 
1.050 
0.999 
0.970 
0 " 
100 " 
40 
1. 000 
1-053 
I. on 
0.929 
0.868 
0 " 
80 
60 
1. 000 
1-035 
0.996 
0.886 
0.827 
0 " 
60 
80 
1. 000 
1.039 
0.988 
0.871 
0.807 
0 " 
40 
100 " 
1. 000 
1. 014 
0.971 
0.885 
0.831 
0 " 
20 " 
120 " 
1. 000 
1. 012 
0.959 
0.865 
0.816 
0 " 
0 " 
140 " 
1. 000 
1.029 
1. 019 
0.950 
0.927 
