458 BOTANICAL GAZETTE [JUNE 
considerably poorer than in those containing three of the fertilizer 
elements. 
If we consider now the results of table IV in the light of these 
facts and in the same groupings, some interesting facts regarding 
the effect of the methyl glycocoll are revealed. 
In table V are given the cultures of group a, which as a group 
normally produces the largest growth and the greatest absorption. 
The number of the culture is given in the first column; the third, 
fourth, and fifth columns give the composition of the solution; the 
sixth the green weight of plants grown in solution without methyl 
glycocoll; and the last column the green weight of plants with 
methyl glycocoll. There is considerable difference in growth in 
these two sets of cultures, as is seen in the table. 
TABLE V 
GROWTH OF WHEAT PLANTS IN THE BEST CULTURE SOLUTIONS OF GROUP @ WITHOUT 
ND WITH METHYL GLYCOCOLL 
COMPOSITION OF CULTURE SOLUTIONS | GREEN WEIGHT 
ae | ae Without With 
P.Os NH K.0 ‘methyl F ginracelll methyl glycocoll 
ppm ppm. ppm gm. gm. 
oe apay as ies 32 24 4 2.44 1.79 
$800 24 24 32 2.92 1.80 
eo nEND 24 32 24 2.42 1.80 
AGE eae, 16 24 40 2.54 1.59 
pa Sy ere Sr aes 16 32 32 2.54 1.70 
AS Oe. 16 40 24 2.24 1.60 
AD. is 8 24 48 2.54 1.790 
nee eee 8 32 40 2.90 1.70 
Ce geeceh 8 40 32 2.42 1.65 
BPs eens 8 48 24 2.45 1.60 
The total green weight of the 1o cultures without methyl 
glycocoll was 24.71 grams, against 16.84 grams for the methy! 
glycocoll cultures, a reduction of 32 per cent. It is also interesting 
to compare the absorption of phosphate, nitrate, and potassium in 
these two sets of cultures. The ro normal cultures absorbed 28.9 
mg. of P,0;, NH;, and K,O, and the 1o cultures with the methyl! 
glycocoll absorbed 20.8 mg. That is, the methyl glycocoll cul- 
tures absorbed 28 per cent less nutrients than the normal cultures. 
