THE TEST WHKIGHT OF GRAIN, 5 
PROPER METHOD OF FILLING THE TEST KETTLE. 
Table II gives the results obtained by filling the test kettle from a 
hopper and shows the influence on the test weight per bushel of 
(a) the height of the fall, or the distance of the hopper opening above 
the test kettle, and (0) the size of the grain stream, or the diameter of 
the hopper outlet opening. These data represent the average results 
of 10 tests under each condition specified in the tests with the special 
apparatus described in this bulletin. In making these tests three 
hoppers were used, having outlet openings 1, 1}, and 14 inches in 
diameter, respectively. A large sample of each of the grains shown 
in the table was split up into nine equal portions with a sampling 
device and mixed until each sample showed the same test weight 
under the same conditions. 
TaBLE IIl.—Test weight per bushel of different grains, showing the influence of 
the height of fall and of the size of grain stream in filling the test kettle. 
[Average results of 10 tests under each condition described. ] 
|, Test weight per ‘| Test weight per 
bushel (in bushel (in 
pounds) when the || - pounds) when the 
stance ofthe distance ofthe 
(0) er openin : : (0) er openin 
Grain and diameter of hop- cians the Lea Grain and diameter of hop- ayers the pea 
per opening. was— per opening. was— 
2 3 4 De eae 4 
inches. |inches.|inches. | Pees inches. 
| 
| * 
Flaxseed: E Emmer: 
HSIN Clee ee ee 52.34 | 52.35 | 52.34 Isao) oes es el ere e aa 28.04 | 28.54 | 28.65 
ieeimches== tees eee 52.34 | 52.35 | 52.34 IPTACHOSe oh pe eee: 27.85 | 28.25 | 28. 43 
MPerin CICS ies pas oe Soe ne 52.35 | 52.36 | 52.34 i inChesssae use ee ee 27.62 | 28.05 | 28.26 
Milo: Corn: 
Meena elle eee Nee eee 59.30 | 59.39 | 59.55 I Fnac) aT ae pace i ee a | 54.99 | 55.50 | 55.71 
leaves es ac. Oe lee ae 59.24 | 59.31 | 59.46 HELA CIES pete aa 54.78 | 55.28 | 55.44 
de imehessvs. 4.5: 3s. 59. 22 | 59.26 | 59.36 Ie ANCHCS Soho eee cue 54.67 | 55.08 | 55.29 
Wheat: Barley: 
esi Chee een ----| 61.20 | 61.32 | 61.45 | NGS Cla eee enon eine aes Me | 47.08 °| 47.35 | 47.78 
ISSNMNOWES G2 Gk tae eae eae 61.14 | 61.25 | 61.34 IP imcChese eye ee ee 46.87 | 47.10 | 47.46 
IASI GMCSes aera ee 61.08 | 61.16 | 61.20 ||. Lin chess sete eae 46.66 | 46.86 | 47. 23 
ye: | || Oats: 
1 inch oS ae Deere ae 53.98 | 54.12 | 54.20 AIT e aest eeeea ee 37.31 | 37.65 | 38.03 
17 inches SUES ae ee er 53.88 | 54.00 | 54.05 | Lin Ches : 2 ses ee a 37.05 | 37.25: | 37.67 
TEP OOS eS se are ae ae 53.81 | 53.92 | 53.98 | IPN Ch eS: eee ace os ee 36.81 | 37.01 | 37.35 
Rice, rough: | 
Te Walaa 2st Sana ea 43.33 | 43.43 | 43.61 | 
de im @lnes me sae earth 43.15 | 43.25 | 43.40 | 
HM CheSes pees se Hee ak! 42.85 | 42.95 | 43.24 
Tt will be observed that neither the height of fall nor the diameter 
of the hopper outlet opening affects the test weight of flax to any 
appreciable extent, but both factors have a decided and direct influ- 
ence on the test weight of the other grains, the effect being more 
noticeable with the large or loose-structured grains than with the 
1 The sampling device used in these experiments is explained in U. S. Department of 
Agriculture Bulletin No. 287, by E. G. Boerner, entitled ‘“A device for sampling grain, 
seeds, and other material,’ issued Sept. 14, 1915. This device has been covered by a 
public-service patent. 
