10 BULLETIN 1221, U. S. DEPARTMENT OF AGRICULTURE. 
Tube No. 7 was packed by tamping each 2-inch layer with a 
weighted Roe rod. The tube was allowed to stand 46 days, 
and was sampled immediately, commencing with the bottom inch. 
Tube No. 8 was packed in the same manner as tube No. 5 and was 
allowed to stand just long enough for the moisture to appear at the 
top of the ninth inch. The tube was then removed from the water 
and sampled immediately. 
Table 4 gives the moisture percentages as determined for each 
1-inch section of the tubes. The arrangement of the table is the same 
as that of Table 3. 
TABLE 4.—Distribution of capillary moisture in vertical soil columns of Idaho lava ash 
soul, by percentages. 
Distance) ype Tube Tube Tube Papen Tube Tube Tube Tube 
above | No. 8. | No.6. || No: 7.1 |" No.8. P08%e bl “Nols. |" No.6.) (No. 709) 9 Ne. 8 
Inches. | Per cent.| Per cent.| Per cent.| Per cent. || Inches. | Per cent.| Per cent.| Per cent. | Per cent. 
1 25, 02 26. 24 28, 82 31.60 35 25. 08 24, 30 26.133 S\\'b2 Sas ontee 
2 25, 28 26. 41 29, 33 31. 76 36 24, 91 23. 62 26530 Fil Ss a See 
3 25. 80 27. 58 29.17 31. 68 37 24, 44 23. 17 20s 633) St ae 
4 27. 63 28. 50 28, 89 31. 43 38 24,14 22. 43 20. 35% |. coe 
5 28. 45 29. 36 29. 09 30. 82 39 24, 28 24, 65 7s Rar 4 (altel eee se 
6 28, 58 29. 27 29. 88 31.01 40 23. 88 23. 09 2A8L Ee 
75) 28.39 30. 28 30. 12 30. 52 41 23. 25 24.15 24,60. | 262235 Bee 
8 27, 54 29.73 30. 60 29. 90 42 22. 71 23. 79 24.65! 25s Saeeee 
9 29, 41 29. 73 30. 97 28. 96 43 22. 30 23.18 DA 24 Ne Geen ee 
LO Be Sax cretdiare's 31. 56 SOMO cea |Siesc crsrescacters 44 21. 98 22. 80 PoP Ps Vere peels os a 
11 32, 68 29. 08 S228) (sot eee 45 21. 81 22.41 23520) Noche o2eee 
12 33. 30 30. 57 BY il eel Bene Sets 4 Se 46 21. 70 22. 23 VPLLE Rel eS ee 
13 32. 21 33. 30 SUP Iii Bees aite 47 20. 68 22. 03 22,61" | eed ee 
14 33. 13 34, 13 a fg 4 Be ee 48 20. 41 20. 90 22028 |eebeeeeor 
15 32, 35 32. 98 Baie (Ete woes cee 49 19. 70 20. 69 Do ADIN Da a eae 
16 32. 40 29. 49 BBacks | EAS TeRE. 50 19. 46 20. 61 2219) eee ee 
17 29, 22 27. 30 REEDS iis eee oer oe 51 19, 52 20. 23 22; VE Bie cesete 
18 31. 88 27. 63 S2,Daee le ae snes 52 18. 69 19. 88 21330'-4|. se soe 
19 32. 12 30. 05 B2e BO) | seisttenletas 53 17. 98 19. 47 PARE ERAS Pe sh 
20 31. 40 31. 06 BLO |e tsthn er ay0 54 17, 47 19. 16 AAD reer oete 
21 31.18 30. 79 S162 Seer eek ke 55 16. 58 18. 68 20560*<|\.2eeeee ee 
22 29. 68 27.01 SE 7 (7 ees oor 56 15. 31 18. 03 20.33: Wee ences 
23 30. 17 23.77 Os 40 7 seers cae 57 13. 59 17. 25 19545 Nees esee ets 
24 28. 98 26. 73 BO. Qhesle Meee OStaseseece oes 16.72 18°80)" |e.beess aad 
25 27.90 26. 00 Se Ollpeal Scie cleieteetae D9) | aiawicae eae 16. 25 W8.34). [See ees 
26 28. 16 27. 04 SLLTS Ae lier. Led COG ss da2Fshs3 14.75 17.43) |SsiscSeeee 
27 27. 47 27. 45 PEI SH i a eee a Gla lienkecdcee 13. 68 16. S40 acre ee 
28 27. 90 27. 13 28702" | a aoe Oe G2 Fie. See 10, 87 16233 -|2eeee ens 
29 27.69 25. 63 PaaS ital | ay eee 63 alsegba se dc|asaetheose 19.63...) Tsedet sxe 
30 26. 98 23. 69 2UIS8 ail eeep ne ae GaSe cee amas oltetonatem stars V4. 02" ange ae neeee 
31 26. 55 25. 06 28.322 (SIE bede? GD i St 58t = asses SSeS 13,48 3 soca eee 
32 26. 12 23. 87 21, 102 | ee ee GOs EL. eS acalease ete ome 1ON1S | aces eee 
33 25. 90 24, 55 2B2900 Alas ssepeeee 3 El eee Se 
34 25, 32 24, 67 ZOMBIE SEE Average.| 25.65 24, 62 25. 93 30. 85 
Figure 3 gives the information of Table 4 graphically. A glance 
at the curves for tubes Nos. 5,6, and 7 shows the transverse lines in 
the form of Desc curves with the highest point nearer the one 
L) 
iz 
: EM 
bey] a ae 
sant Bee Pe ett 
 rrrre EEEECHECECE EEE 
é inehes Above Water 
Fig. 3.—Distribution of moisture in vertical columns, Idaho lava ash soil. 
end of the line than the other. The curves for tubes Nos. 5 and 6 
are quite broken, and this is especially true of the curve for tube No. 
6. The curve of tube No. 7 is much more regular. It will be noticed 
that the highest point in the three curved lines is a considerable dis- 
Laat iti has al 
