18 BULLETIN 1115,°U. S. DEPARTMENT OF AGRICULTURE. 
TasLe 2.—EH fect of storage on chemical composition of calcium arsenate—Continued. 
: Water-} Car- ; : Water-| Car- 
Period Period 
Sample ex- Date pada ae Sample ex- Date of sclubja “ag 
amined. sampled.| stor- |" Oyiq id amined. sampled.| stor- |*O4° | oxid 
} age xi oxi age. oxi oxi 
; (As205).] (CO2). (As2O5).} (COs). 
FS-5 (25 pounds HS (100 pounds 
in unlined ve- 1920. Mos. | Per ct. | Per ct. in hardwood 1920. | Per ct.| Per ct.| Per.ct. 
neen.drum)_24.\') Apr. 120 |b... 22: 0.05 1.90 Darrel) 2. eee. ADTs 20 ste ssoas 0.10 1.07 
June 10 i bf - 06 1.96 June 10 lod 05 95 
July 14 2.8 05 1.88 July 14 2.8 . 04 - 88 
Aug. 14 3.8 - 05 2. 26 Aug. 14/, 3.8 02 - 98 
Sept.17| 49 S064)" | 2.53 Sept. 17| 4.9 02 85 
Oct....15 5.8 05 2. 68 Octe15 5. 8 02 1. 02 
Nov. 17 ~ 6.9 -07 2.95 Nov. 17 6.9 02 1. 04 
Dec. 15 7.8 -06 2. 98 Dec. 15 7.8 04 1, 28 
1921. | 1921. | 
\ Jan. - 15-{-—&8 -06} 3.28 Jan. 15; 88 02 94 
Apr. 2 1:4 .05| 3.08 Apr. 2} 11.4 02; 1.48 
July 1] 143 .08}| 4.36 July 1) 143 02) 1.54 
Ocal 1773 09 4,77 Oct. - 1 17.3 02 i seas! 
1922 1922 
Jan. 21} 20.4 22 5. 38 Jan. 2] 20.4 07 1. 69 
HS-1 Oo opuea) peau ; Se 
; in meta pre ZOMEo fe ce. me! 6 
$ FS-6 (25 pounds June 10] 1.7| .04) 1.00 
+ in paper-lined | 1920. July 14] 2.8 . 04 9 
veneer drum)..| Apr. 20 |....... 06 1.93 Aug. 14 3.8 02 .92 
June 10 7 05 2.16 Sept. 17 4,9 02 .93 
July 14} 2.8 -05} 2.34 Oct. 15] 5.8 02 95 
Aug. 14| 3.8 +05] 2.35 Nov. 17| 6.9 02, 1.22 
Sept.17; 4.9 -06] 2.30 Dee. 15] 7.8 62;)', | 1.18 
Oct. -15 5.8 +05 2. 62 | 
Nov. 17 6.9 “07 3. 48 1921 
Dee. 15 7.8 07 3. 79 Jan. 15 8.8 02 .98 
Apr..o2t| 11.4 02 -97 
1921 July 1] 143 02 93 
Jan. 15 8.8 -07 4.06 Och" 173 .02 1.01 
Apr. 2} Lid -08 3. 80 
July 1 14.3 12 517 1922 
, Oet.-—1-+|-123 33 5. 51 Jan.+ 2} 20.4 -05 1.02 
1922. HS-4 ape ee 
Jan. ~~ 2°} 2004 39 5. 23 in hardwood 1920. 
armel) esosecees | OA DEp COE es see alk 1.08 
we WH Lv pe 1.06 
HW (50 pounds uly 1 ° p08 | ae EL 
in hardaroad 1920. ee ee ee oh Jee 
Sept.17| 4.9 02°} 4/07 
Darrel): 2..}: 1 oS PN A | SASS yl! - 87 Oct. 15 5,8 02 1.06 
June 23 2.4 08 . 90 sik mt F ; 
Nov. 17 6.9 . 02 1.52 
1921. Dec. 15 7.8 02 1. 66 
ee pea 104 
wy : e ° Jan. :15 || 88 |) -s0m|> tad 
NOYa. BP of onde OF sh} « Apr. 2| 11.4 02| 1.38 
1922 July 1 14.3 02 2. 52 
=| Mar a: 1 22.6 5 Oct. 1 iby a} 02 1.88 
1922. 
Jan. 2| 20.4 0% 1.81 
HT (100 pounds 
in hardwood 1920. HS-6 (25 pounds 
barrel)®.2 2. 4Apr. 20s... -10 1.33 in paper-lined 1920. 
ay 4 5 -07 - 84 veneer drum)..}| Apr. 20 |......- old 1.05 
June 10 i bee . 06 86 June 10 17 - 05 1.02 
July 14 2.8 . 04 97 July 14 2.8 . 07 1.15 
Aug. 14 3.8 . 02 99 Aug. 14 3.8 . 05 1.10 
Sept. 17 4.9 - 02 91 Sept. 17 4.9 . 02 1, 22 
Oct. 15 5. 8 .02 1.25 Oct. 15 5.8 . 05 1, 28 
Nov. 17 6.9 - 02 1. 52 Nov. 17 6.9 . 02 1. 48 
Dee. 15 7.8 . 02 2.35 Dec. 15 7.8 . 02 2. 24 
1921 1921 . 
Jan. 15 8.8 . 02 4 Jan. 15 8.8 . 02 1. 87 
Apr. 2°) sie4 . 02 2. 92 ADT. Zeal TA - O2|\- 1°78 
July 1 14.3 -05 2. 87 Jul 1.04.3 . 04 2. 56 
Oct. ll edliZs . 04 2.40 Oct.) 27.3 - 05 3.09 
1922 1922 
Jan. 2! 20,4 ah2 3. 72 Jan, 2! 20,4 $07 <3 abe 
