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DISTRIBUTION OF MOISTURE IN SOIL COLUMNS. 19 
DISTRIBUTION OF MOISTURE IN TUBES INCLINED DOWNWARD. 
Several tests were made to determine the distribution of moisture 
in soil columns inclined downward from the horizontal. In all such 
tests the part of the soil column that was in the water extended 
vertically upward various distances above the water surface before a 
change in direction was made in the soil column. ‘This vertical 
upward extent of the soil column to where a change was made to the 
downward direction is termed the “lift.” This “lift” is the same, 
except as to length, as in the horizontal columns. 
Tube No. 21 filled with the Idaho sandy soil had a “lift” of 4 
inches and was then inclined downward at an angle of 30 degrees 
from the horizontal. The inclined part of the tube was 5 feet in 
length. The lower end of the inclined part was covered with cheese 
cloth to hold the soil in the tube. This column was sampled after 
water commenced dripping from the lower end of the inclined part. 
Tube No. 22 was filled with Riverside decomposed granite soil. 
The “lift” was 9 inches; there was then a horizontal length of 3 
inches and then a vertically downward length of 84 inches. The 
column was sampled before the moisture had reached the lower end 
of the tube. 
Tube No. 23 was filled with Santa Clara soil and had a vertical 
“lift” of 4inches. From this height the tube was inclined downward 
30 degrees from the horizontal and was similar to tube No. 21. The 
tube was sampled before water dripped from the lower end of the 
inclined part of the tube. 
Table 8 and Figure 7 give the distribution of moisture in these 
three columns. 
TaBLE 8.—Distribution of capillary moisture in tubes inclined downward from the hori- 
zontal. 
E | 
Distance} ube | Tube | 
from | No.21. | No. 22. | N 
ube | || pene Tube | Tube | Tube 
oO. = 4 
apex. 
rom + ~ = 
apex. No. 21. No. 22. No. 23. 
| 
| 
| 
Inches. | Per cent.| Per cent.| Per cent.|| Inches. | Per cent.| Per cent.| Per cent. 
ee 13. 65 17. 55 35. 95 ee) Se te eee errs 
y egeae 13. 33 18. 76 36. 11 2215 EES WO o7 Phi9 fa iis 6 
5 See 13. 64 18. 53 36.34 || 34...... b yee Sy \ncrd ts: 1 Saeeaza2 
Bi SAO 14, 20 17.97 35. 49 aie le Pi ee meg el eer 2 [eee 
57 Ow! 14. 47 18. 12 35. 41 B6ci. fi! $533 el ign e | #376. 3h 
age 14, 81 17. 48 34. 60 Cy pee 1530+... 2.2 2. rae 
; MeN EN 12.78 17. 52 34. 48 BRIO iki 1p#t | Avs Bitrisl 3 
aes 13. 91 17. 67 34. 31 | 393. 35. 7 re ee eee Fae, 
Ee 13.18 16. 61 34. 05 aO%o AY, Lon al Rael TE Pie 
$6 or: 15.15 16. 49 34,43 -|) 41. .22.. tine Pe totis ois Serta 
 Vegag 13.15 1G, 85.1) 34.20 = |b 4900. 4G: hrs es 
9545 5 14. 06 16.49 | 34.35 |} 43...... CWT" 2s NMS E ae] STIPE: 
rs. 3. 14. 84 16. 34 33. 74 ry Mele Os (CA Svainiy § Ga Pee 
Ye 144.99 | 16.15 | 33.38 || 45...... tare Woe lion 
B55. ics 13.77 15. 89 | 32. 30 46...... ITI WB eo ORhie. fou: 
Gh s3Es 14. 36 15. 57 32. 32 ya" | A a aS RR Ce SEES 
“SES 15. 63 15. 76 30. 97 7 ES BO St e582. 29 efits st 
et oe. 13. 08 15. 60 31. 00 oe I 4 See eh en 
oer 14. 14 15. 29 30. 56 i Te sigh: Ld Me tae eerie aie ie” 4 
Wer (32: 15.14 14.78 29. 30 Slide S08 pts Pcs 
EE 14. 45 14, 99 29. 06 igh AT aig SAR) eer: 
air it 13. 96 14.77 28. 70 Bak. soc (3: OM Bea ES DEAE) 343 Ce his 
2: 14. 84 14, 26 28. 02 oT ae Me Abs}. wists. se decd | 
see 13. 81 14.17 27. 20 " Spee ee eee ee | 
ieee 14, 23 13. 60 26. 36 BBLET CEL RC See Bp petal aan 
7. ae 14. 38 13.18 24. 80 Ly eee 2 i eae een te ie | 
i le 14. 05 12.78 23. 80 BR eect: - ) 1 eG EX. MES eI d 
ete 14. 11 12.19 21. 80 |— 
hoe 15.13 11.15 18.18 Average} 15.46 | 15.53 | 31.07 | 
SQ i=) 14. 70 Ooty lett tel _—————————— ed 
Bie a eee ee eRe 22.41 | 28.62 | 41.40 | 
1Sample ‘‘X”’ is soil from the “ wick’’ and 2inches below the apex of the vertical part of the tube. 
