140 TRANSACTIONS OF THE 
with a 2-inch post hole type soil auger to a depth of 12 
feet. The soil taken from each foot was thoroughly mixed 
on an oilcloth, and from the mixture a 250 c. c. sample 
can was well filled. In the laboratory 200 gm. samples 
of moist soil were dried at 110 to 115 degrees centigrade. 
The moisture content is reported in percentage of the 
weight of water-free soil, and also in acre-inches 
for each acre-foot of soil. 
RESULTS GF CBSERVATIONS. 
The results of the observations show that an appreci- 
able downward movement of water continued in each 
plat from June 14th, the date of irrigation, to October 
Lith, the date of the last sampling. To show most clearly 
the amounts of water retained and the rate of capillary 
movement, the observations are platted first as percent- 
ages moisture in each of the upper 12 feet of soil on the 
different dates, and second, as acre-inches of water in 
different soil depths as determined by the time after 
irrigation. 
The first group of curves show that the 12 inches 
of water applied to Plat A did not reach the 12-foot 
depth of soil for several days, but that some of the 24 
inches passed thru the upper 12 feet of soil the third 
day after irrigation, and that much of the 36 inches had 
gone below the 12-foot point one day after the water 
was applied. 
The plats reporting inches of water in the various 
depths platted against time show that from the upper 6 
feet of soil there was a gradual loss of water as the sea- 
son advanced. These curves show further that the 
quantities of water found in Plats B and C are not 
appreciably influenced by the depth of soil selected as 
the index of capacity. 
The moisture content curves platted against time 
also show that the rate of downward movement of water 
decreases rapidly after the fifth day after irrigation. 
This is brought out by a comparison of the moisture 
content in each foot section on the dates of sampling 
immediately following the fifth day after irrigation to 
the moisture equivalent of the soil taken from the res- 
pective depths. 
