Lee 
TURPENTINE. 49 
0.000945 X5.5° 8,000 gallons equals the quantity in gallons which must be added 
to the gaged volume of 8,000 gallons to give the true gallonage at 15.5° C. 
(c) Certification.—Turpentine delivered in barrels, drums, or tank cars shall either 
be accompanied by an official gager’s certificate showing the net contents of each con- 
tainer and also the temperature of contents at time of gaging, or shall be subject to 
FI gaging by the purchaser’s inspector. In the absence of a statement of the temper- 
ature at the time of gaging on the official gager’s certificate, or in case the barrels show 
evidence of loss by leakage or other shortage, the delivery shall be subject to rein- 
spection and regaging by the purchaser’s inspector. 
TABLE 9.—Correction to barometer readings.' 
(From circular F, Instrument Division, Weather Bureau, U. S. Department of Agriculture.) 
Observed reading of barometer. in millimeters. 
Tem- 
pera- 
ture, 640 650 660 670 680 690 700 710 720 730 740 750 769 770 } 780 
JG: 
N5SOn Ibs os Is 6l sell Gael O6) | ANGOn te (a Lea eON leon Meola: Soule shal dees 1.91 
1OSON SEC | e169) (S72) eon. 77) 1802) 1583) 852) 1.88" |) Ae 904} 1935) 1296) |) 1298 152207 2.03 
17.0 | 1.77 | 1.80.| 1.838 | 1.86 | 1.88 | 1.91 | 1.94 | 1.97 | 1.99 | 2.02 | 2.05 | 2.08 | 2.10 | 2.138 2.16 
VSSOM SSCS ells SOS Sie 96) |) e994) 2202 12 25 05)| 2208) (a2. 1d | 22a 27 || 2520) | 2, 2351525 265 2. 29 
AOZOR SISOS AHO 04e e220 selene LO ne eto eca lea u2e20) le2e2o) leoecO) |e. 29) I 2asAieanoprleosos 2.41 
PURO 2 OSEI eal On| elon 22S Iai 2a2oN | ao udreoh |lesuo4e| aaa aa4l Ie on44 | IDeA Deny 2.54 
Die e| paso nN e2en22ne2e 2G: eo a2O nl an oDaleaa SON ecaSo leaden lass SON 2so0F|e2505) 102.50) Its GOn e265 2.67 
PPX) PRY | PRBSY | PLS At PE GO | PLE B) OL ai OX ah PX y tet Ad aye) Ie PAC Ole | PARC iyay EAC) 1) Oe oP |e or 2.79 
23508) 2240) 22430) 25475 12) bk 12: 54-25-58) | 25.62 | 2566) |) 2-69 |) 257. PTTL Wee Pe Ell eS 2.92 
DAR On eon loa 4 least leases || AGO. 12569) |leeevoal aude le2sele ly 2.85 || 2092293) 182-97 18350k 3.05 
2S Oe ZAC ON e2nO4eleonOSt eat Me2evii lod Sis le2e8o) | 2e89n) 22930|02° 97% WW osOL, \P305NIr3. 092 | 73-13 Solid 
26.0 | 2.71 | 2.75 | 2.79 | 2.83 | 2.88 | 2.92 | 2.96 | 3.00 | 3.04 | 3.09 | 3.138 | 3.17 | 3.21 | 3.26 3.30 
27.0 | 2.81 | 2.85 | 2.90 | 2.94 | 2.99 | 3.03 | 3.07 | 3.12 | 3.16 | 3.20 | 3.25 | 3.29 | 3.34 | 3.38 3. 42 
ZOnO M2 O Me2590) Loan SaODE Po sONleS el 4a oat Oulesa2o jeo=28 lores WOO iros4h |pon4Onlnoaol TOD 
295 QEsSs021| o20br olla |so-162| oe2k |P3.25:1) oaa0l| S23) duosoos| o244 13.49) | S204 193258. | 3263 3.68 
SOKO MEOUUAN OValNOucanlnOwae leon o2 | SooOn ood |pon4O4 osOlel oso) | eOl jeseeOibo. @ialionva 3.80 
Si) P7771) ot 77 | Shey | abel | ee8) eis ahs SE 583 1) Seis ay oss h BGs Gy 77 Boil 3.83 | 3.88 3.93 
32.0 | 3.33 | 3.38 | 3.43 | 3.48 | 3.54 | 3.59 | 3.64 | 3.69 | 3.74 | 3.7 8.85 | 3.90 | 3.95 | 4.00 4.05 
33.0 | 3.43 | 3.48 | 3.54 | 3.59 | 3.64 | 3.70 | 3.75 | 3.81 | 3.86 | 3.91 | 3.97 | 4.02 | 4.07 | 4.13 4.18 
1 These corrections apply to a mercurial barometer with brass scale. They can, however, be used for a 
mercurial barometer with glass scale, since the errors introduced thereby are negligible as applied to the 
work contemplated in this bulletin. For exact correction to be applied to such a barometer, see Smith- 
sonian Physical Tables (1914), p. 119. An aneroid barometer should not be relied on. 
For barometer readings below 640 mm. the correetion can be interpolated, since the difference, at any 
particular temperature for each 10 mm. variation in barometer reading, is practically constant. 
STATISTICS. 
The Census Bureau, United States Department of Commerce, 
collects statistics on the production of turpentine and rosin every 
five years. Estimates of production are published annually, at the 
close of the naval stores season, March 31, in the Naval Stores 
Review of Savannan, Ga. 
Both producers and consumers of turpentine and rosin have long 
desired that the Department of Agriculture collect periodical statis- 
tics covering production, stocks available for sale, and stocks in the 
hands of the chief consuming industries. These statistics are to 
! serve as a guide to the producer in planning his next year’s work, and 
to the consumer in purchasing, by giving to each accurate information 
concerning supplies on hand. 
This information is expected to insure remunerative returns to the 
producer and to protect the user against exorbitant prices. The 
