8 o8 
Journal of Agricultural Research 
Vol. XXIV, No. 9 
Tree 2 was the smallest in its series, but was smallest when planted. 
The leaves were excellent. The lowermost portion of the root axis had 
died, but a large mass of healthy laterals developed directly above the 
dead portion. Tree 85 was splendidly developed and was typical of its 
series. The rootlets were much more finely divided than in the sand 
series (PI. 5, A, B). 
The dry leaves, shoots, and rootlets were passed through a large hand 
mill, and any pieces remaining underground were removed. The trunk 
and root portions were sawed into thin sections, the sawdust being used 
to represent the trunk and root, respectively. 
When ready for analysis the samples were thoroughly mixed and so 
far as the material available permitted duplicate determinations were 
run. The methods of analysis employed were essentially those used 
by Kelley and Cummins (6) in their analyses of citrus material. Manga¬ 
nese was determined colorimetrically by the persulphate method, which is 
very satisfactory for small amounts (u). Iron was also determined 
colorimetrically. A few sodium and potassium determinations were 
made, using the filtrate after the Fe, Al, PO4, Ca and Mg were removed, 
but the analyses indicated that low results were obtained. Subse¬ 
quently more satisfactory results were obtained by using the filtrate 
from the sulphate determination. 
The analytical results for the several portions of each tree are pre¬ 
sented in Tables III to VII, inclusive. The data have been calculated 
as percentage of dry matter and as percentage of ash. The figures given 
are the averages of two closely agreeing duplicates. It is seen that the 
total percentage of the ash approximates 100 in most cases, but in none 
reaches it. Those who are familiar with the details of analytical work 
of this kind appreciate its difficulties. If the reader be one who insists 
upon total percentages equaling 100 the authors can merely say, in com¬ 
mon with other workers in this field, “peccavimus.” 
Tabi^B III .—Analyses of leaves 
N. . 
S... 
P... 
Ash 
K.. 
Na. 
Ca. . 
Mg. 
Mn 
Fe. 
Al. 
Cl. 
CO3. 
SO4. 
SiOs 
PO4 
Element. 
Total 
Expressed as dry matter. 
Expressed as ash. 
Tree i. 
Tree 2. 
Tree 85. 
Tree I. 
Tree 2. 
Tree 85. 
Per cent. 
Per cent. 
Per cent. 
Per cent. 
Per cent. 
Per cent. 
3 - 24 
3 - 14 
2. 15 
0.31 
0. 30 
0. 29 
0. 10 
0. 20 
0. II? 
14.37 
14.32 
13.72 
3 * 54 
3 - 56 
1.44 
24. 59 
24.91 
10. 51 
0. 13 
0. 21 
0. 16 
0. 90 
1-43 
I. 16 
2. 71 
2. 66 
3 * 94 
18. 85 
57 
28. 66 
0. 31 
0. 26 
0-37 
2. 14 
1-75 
2. 65 
0. 004 
0. 004 
0. 002 
0. 03 
0.03 
0. 02 
0. 025 
0. 04 
0. 03 
0.17 
0. 26 
0. 23 
0. 17 
0. 14 
0. 08 
I. 14 
0. 97 
o- 59 
0. 04 
0.05 
0. 02 
0. 26 
0.31 
0. 15 
40. 70 
40. 93 
42. 64 
3. 18 
3 * 17 
3 - 91 
o- 39 
0. 43 
0. 47 
2. 75 
3. 02 
3-43 
3 * 92 
4. 02 
3 - 23 
98.63 
99-37 
97.18 
