86 
Journal oj Agricultural Research 
Vol XXX, No. 1 
Fig. 1.— Yield of oleoresin per streak per tree in chipping test on longleaf pine, Camp Pinchot, Fla., 1923 
Table II .—Yields of oleoresin obtained in chipping test on longleaf pine, Camp 
Pinchot, Fla., 1923 
Date of dipping 
Num¬ 
ber of 
streaks 
cut 
j since 
last dip 
Yields 
Group 1 (34-inch 
chipping) 
Group 2 04-inch 
chipping) 
Group 3 (%*inch 
chipping' 
Total 
for 20 
trees 
Per streak 
per tree 
j 
Total 
for 20 
trees 
Per streak 
per tree 
Total 
for 20 
trees 
Per streak 
per tree 
Apr. 9°_ 
Apr. 28_ 
May 18_ 
June 25_ _ . 
July 26_ 
Aug. 27_ 
Oct. 1_ i 
Dec. 10_ 
Total dip for season. 
i 
Comparable total 
dip for season_ 
Total scrape 
! 
> 
6 
3 
4 
4 
5 
4 
Pounds 
25.00 
21.00 
20.00 
28. 00 
22.50 
27.50 
22.00 
28.00 
Ounces 
3. 33 
5.60 
5. 33 
5.60 
4.50 
5.50 
3. 52 
5.60 
Pounds 
*> 16. 75 
18. 75 
16.00 
23.00 
22.00 
28.00 
21.00 
26.00 
Ounces 
2. 23 
5.00 
4. 26 
4.60 
4. 40 
5. 60' 
3. 36 
5.20 
Pounds 
( c ) 
20.50 
22.00 
23.50 
22.00 
22.00 
20.00 
21.00 
Ounces 
5. 46. 
5. 86 
4. 70 
4. 40 
4. 40> 
3.20 
4. 20 
33 
194.00 
5.01 
(0. 313 pound) 
171. 50 
4. 59 
(0. 287 pound) 
4. 4S 
(0. 280 pound) 
27 
169.00 
154. 75 
151.00 
43.00 
42.00 
51.00 
Total comparable 
rlin anrl snranp. 
212.00 
196. 75 
202 . 00 
r 
« Dipping of April 9 not counted in comparable total because Group 3 was lacking. 
h Chipped later in week than Group 1; full amount of gum not in cup at first dipping. 
« Weight not taken. 
The fact that the 34-inch chip¬ 
ping gave a high total yield of gum 
and produced a particularly high 
yield during the latter part of the 
season is of great significance if found 
to be maintained in later years and 
confirmed by other tests. This is not 
the first time that such a result has 
