THE NAVAL STOKES INDUSTRY. 23 
Table 10. — Net rosin sales from eight half crops, season of 1902, Georgia. 
Half crops. 
From 
dip. 
From 
scrape. 
Total. 
Excess sales from 
cupped trees. 
First year: 
$401.72 
328.40 
266.34 
104.51 
171.27 
39.49 
167.33 
36.09 
$47.72 
35.53 
49.25 
66.95 
27.44 
26.57 
29.23 
27.91 
$449.44 
363.93 
315.59 
171.46 
198.71 
66.06 
196. 56 
64.00 
Net. 
$85.51 
Per cent. 
23.50 
Second year: 
144.13 
84.64 
Third year: 
132. 65 
200.80 
Fourth year: 
132.56 
207. 13 
The first year crop mentioned in Tables 9 and 10 was worked for 
two years longer. The combined yields obtained for the " cupped 
half" and " boxed half" during the 3-year period of operation are 
given in Tables 11 and 12. 
Table 11. — Spirits of turpentine from half crops, seasons 1902-1904, Georgia. 
Cups. 
Boxes. 
Excess 
from 
cupped 
half crop. 
Net price 
per gallon 
at time 
of oper- 
ation. 
Value of 
excess 
Year. 
Dip. 
Scrape. 
Total. 
Dip. 
Scrape. 
Total. 
from 
cupped 
half crop. 
First 
Second 
Third 
Gallons. 
1,385.3 
1,103.5 
781.3 
Gallons. 
205.0 
165.0 
136.0 
Gallons. 
1,590.3 
1, 268. 5 
917.3 
Gallons. 
1, 134. 7 
705.2 
536.1 
Gallons. 
153.7 
226.6 
190.5 
Gallons. 
1, 288. 4 
931.8 
726.6 
Gallons. 
301.9 
336.7 
190.7 
Cents. 
40 
45 
45 
$120. 76 
151. 52 
85.82 
Total 
3, 270. 1 
506.0 
3, 776. 1 
2,376.0 
570.8 
2,946.8 
829.3 
358. 10 
Table 12. — Net sales of rosin from half crops, seasons 1902-1904, Georgia. 
Cups. 
Boxes. 
Value of 
excess 
Year. 
Dip. 
Scrape. 
Total. 
Dip. 
Scrape. 
Total. 
from 
cupped 
half crop. 
First 
$401. 72 
286. 88 
212. 60 
$47. 72 
58.24 
61.65 
$449. 44 
345.12 
274.25 
$328. 40 
132. 42 
124. 76 
$35. 53 
84.08 
79.70 
$363. 93 
216. 50 
204. 46 
$85 51 
Second . 
128. 62 
Third 
69 79 
Total 
901.20 
167. 61 
1,068.81 
585.58 
199.31 
784.89 
283. 92 
RELATIVE AMOUNTS OF SCRAPE FORMED BY THE BOX AND CUP 
SYSTEMS. 
The resin obtained from trees turpentined by the box method must 
flow an increasingly greater distance each year the tree is tapped. As 
a result the amount of scrape formed is proportionately increased. The 
proportion of scrape formed by the two systems is shown in Table 13. 
