136 
Journal of Agricultural Research 
Vol. IX, No. 2 
Table VI .—Specific rotation of fractions of hop oils distilled for the years igo6 to igog, 
inclusive —Continued. 
1907 CROP. 
Source of hops. 
Fraction 
1, —i65°C. 
Fraction 
2, 165' 0 to 
170* C. 
Fraction 
3, 170° to 
i8 S °C. 
Fraction 
4, 185° to 
225 * C. 
Fraction 
5 , 225 ° to 
260* c. 
Fraction 
6, 260° to 
375 ° C. 
Fraction 
7 , 275° to 
290® C. 
California: 
Minutes. 
Minutes. 
Minutes. 
Minutes. 
Minutes. 
Minutes. 
Minutes . 
Perkins. 
-15.° 
-17.7 
-27.3 
-56-3 
-68.8 
-87.1 
- 35-9 
Cosumne. 
— 12. 7 
-23. 6 
- 35-2 
- 43 - 2 
“ 54-5 
+ 33-2 
+ 38.4 
Ukiah. 
1 
H 
00 
—22. 7 
- 35-2 
—66. 0 
—70. 8 
- 37-3 
+ 47 -1 
Wheatland. 
— 12. 7 
-24. 7 
-30.4 
-29.4 
-58-7 
— 69. I 
+ 139-0 
Oregon. 
- 3-8 
“ 5-7 
— 16. 9 
-38-3 
—63.0 
+ 25-5 
+ 38.7 
New York. 
- 5-8 
- 9.4 
+IO- S 
+ 59-7 
+ 93 -1 
Imported (Saaz).. 
Inactive 
“ 4-6 
+ 1.7 
+ 9. 2 
+ 66.9 
1908 CROP. 
California: 
Perkins. 
Inactive 
Inactive 
-20. 5 
-44. 6 
“66.5 
+ 28. 4 
+28.4 
Cosumne. 
-25* 5 
-25. 6 
-28.8 
“ 44-5 
— 72. 6 
— 40. O 
+ 23-4 
Ukiah. 
Inactive 
— 6. 2 
—10. 6 
— 30 . 
— <;8. 7 
+ 14 . 7 
Wheatland. 
- 25-5 
-30. 7 
-38. 2 
0 7 0 
— 64. 2 
0 / 
-84-3 
- 25-s 
+28.1 
Oregon. 
Inactive 
- 5 -o 
— 16. 1 
— 26. O 
-13.1 
+ 60.4 
+ 9 -S 
New York. 
— 1 7 * 7 
- 25*5 
O 
e* 
1 
+38-7 
+ 88.5 
+76.9 
Washington. 
Inactive 
— 18. 7 
“27.3 
+ 37-4 
+ 79-3 
+71.1 
Imported (Saaz). 
Inactive 
-15.2 
“25.3 
- 44 . 7 
+ 77-9 
+ I ° 4 - 7 
+ 
00 
On 
H 
1909 CROP. 
California: 
Perkins. 
Inactive 
“9-5 
— 24 . 8 
-Si* 1 
- 66 . 9 
4.8 
23*9 
Cosumne. 
— 20 . 5 
— 24 . 8 
- 38.9 
- 63.0 
- 52 . 5 
36.4 
45-7 
Ukiah. 
- 13.8 
— 20 . 2 
- 39.6 
“75-3 
— 41 . 6 
21.1 
Wheatland. 
— 10 . 2 
-H-3 
- 30.5 
“54* 8 
“95-2 
— 70 . 0 
9.6 
Oregon. 
Inactive 
Inactive 
— 10 . 6 
- 16.8 
— 14 . 0 
83-4 
107 . 2 
New York. 
“IS- 1 
— 21 . 9 
“29-3 
- 11.4 
36-6 
65 * 4 
Washington. 
— 14 . 8 
— 14 . 8 
“32. 5 
8.3 
99.6 
104 . 1 
Imported (Saaz). 
- 17 . 1 
- 37.6 
-13-9 
47-4 
Table VI and figures 6, 7, 8, and 9 show that the initial fractions, 
as a rule, were inactive. This is probably explained by the fact that 
these fractions consist of terpenes having little or no activity. The 
rotation of the first fractions was levo, the power to rotate to the 
left increasing in most cases up to the fifth fraction. This was par- 
