478 
IOWA ACADEMY OF SCIENCE Vol. XXIV, 1917 
the seedlings were sufficiently large, so as to be readily handled 
they were first carefully washed in tap water and later in dis- 
tilled water. They were then ready to be placed in the solu- 
Weight 
of total 
crop in 
grams 
(36 pl- 
ants.) 
. THE .E FFE CT OF FERRIC PHOSPHAT E UPO N THE GR OWTH OF WHB fil 
SEEDLINGS . 
(TOTAL CROP.) 
» ^ r * * 
c to 
o 
f-< O o 
*H rH CJ \r\ 
o o o o 
■U O O O Q 
n • • • ♦ 
.c 
♦ c 
U.O 
<1) -M 
B- - 
O T 
t; U) 
I CM CO 't 
Figure 95 
tions. Six seedlings were inserted into a flat cork stopper of 
sufficient size to fit a Mason fruit jar, according to the method 
of Totttingham. The Canada field peas were germinated upon 
galvanized iron wire screen ; otherwise, the methods of procedure 
