36 BULLETIN 1003, U. S. DEPARTMENT OF AGRICULTURE. 
state. In other words, the heat serves only to convert these oils 
into vapors, which, after being cooled in the condenser, are col- 
lected essentially as originally present in the wood. 
The three important constituents of acid liquor are acetic acid, 
methyl (wood) alcohol, and-acetone. Up to the present time these 
products have been obtained almost exclusively from hardwood. 
Owing to the greater amount of tarry substances present, softwood 
acid liquor is extremely difficult to free from this constituent, and 
the calcium acetate made therefrom is inferior in quality to that 
from hardwood acid liquor. The yield, consisting of methyl alcohol 
and acetone, is also substantially lower than that from hardwoods. _ 
The proportions of acid, alcohol, and acetone as found in these 
western yellow-pine acid liquors (Table 17) were obtained by 
analyzing a composite sample of acid liquor from each set of 
charges run on the various kinds of wood.° : 
TABLE 17.—Composition of acid liquors. 
Acetic acid. | 80 per| Methylalco-| 4 cetone, | Dissolved oils 
cent hol: (e24e a= 3 and tars. 
ee 
Acid w 
liquor lime 
Grade and source. per ? (cale 
| cord. | Per | Per grou Per | Per | Per | Per | Per | Per 
liter. | cord. : liter. | cord. | liter. | cord. | liter. | cord. 
Galls:|-Giis. | Eps. | bs. | Galls.| Galle Ginse) Gare (One ee 
Poor stumpwood, Deary..... 59N4 5) GTO iiss. Only Sosa) | 275 82a e 2a Os Zn 24 a O20 Sees ee ee ee 
Rich stumpwood, Deary....- 55. 9 1:64.67 || 30529) 49.7 |°25.45 | | 1280) | 22. 77, - 16 | 120.08 56. 0 
Medium stumpwood, Deary-.| 54.3 | 67.82 | 30.7) 50.5 | 26.11 | 1.79 | 2.44 16 | 134. 58 60.9 
Dead, down wood, Deary.. 53.4 | 64.49 | 28.7 | 47.2 | 25.98 | 1.76: 2.33 15 | 156. 86 69.9 
Rich stumpwood, Coeur 1 5 
GAleneteesien ncn. sac ebee 60.9 | 64.37 |. 32.7 | 53.8 | 23.19 | 1.79} 2.00 15 | 122.34 62.2 
Medium stumpwood, Hayden 
AKC Re Ua oe 2 oe are 615451655445) 3325) | 2b. 1 2 7eSbe a 2alS | el O2 15} 136.11 69.7 
Bull-pinestumpwood, Boise..| 64.3 | 77.55 | 41.6 | 68.5 | 29.37 | 2.40] 2.21 18) 172512 92.3 
Medium stumpwood, Boise...| 63.9 | 64.67| 34.5 | 56.8 | 25.21 | 2.04| 2.12 .17 | 133.90 71.4 
Rich stumpwood, Boise......| 59.5 | 68.12] 33.8] 55.6 | 25.34] 1.91] 2.16 -16 | 128. 54 63. 8 
Green selected stumpwood, 
BOIS ec en Sa nee eee 63.6 | 71.05.| 37.7 | 62:0 | 27.64 | 2.23 | 2.42 -19 | 161.16 85.8 
Green selected stumpwood, | 
Craig Mountain. —.-2 2-222: 69.2 | 70.40 | 40.7] 67.0 | 26.18 | 2.29) 2.26 -19 | 159. 29 92.0 
Rich cut-over stumpwood, 
Craig Mountain...........- 62.4 | 73.41 38.2 | 62.9 | 30.17 | 2:38 1.81 .14 | 152.37 79.3 
Rich cut-over stumpwood, L 
roadside, Craig Mountain...) 63.6 | 65.12] 34.6) 56.9 | 29.27 | 2.36] 2.07 -16 | 143.31 76.0 
Tamarack stumpwood, Mos- 
cow, Mountain==2s-- = see 74.0 | 41.95} 25.9] 42.6 | 13.88} 1.30] 1.49 14} 66.15 40.8 
Selected dead, down wood, : 
Craig Mountain............ 1528) | 48. 300 S080 10 50: 4a PAL O2ele ade oe anand roam yan mele Oval 75.7 
Selected dead tops, Craig 
IMOUNEaLM AS eh ee ear 6352517572 90 30s o de 2 OOn2) arena 2,22 2:09 A AM ojal Deore 62.1 
Selected green topsand limbs, | 
Craig Mountain...........- 80:8 | 49.67 | 3355 |" 5b.2 | 28509" 2787 19d: 73 17 | 78.98 53. Ze 
Medium stumpwood, road- sas : 
side, Craig Mountain....... 662165) 585215 | 3254 | S58 285210 ea oonl ero .17 | 114.49 63.6 
Rich stumpwood, near Pot- | 
TatChse 428 Slauee eee see ces 65.7 | 59.72'| 32.7°|- 538.8 | 18.26 | 1/54 | “1.69 .14 | 120. 83 66.1 
6The analyses of the acid liquors were made by VY. E. Grotlisch and G. C. Spencer, 
Bureau of Chemistry, United States Department of Agriculture. 
