IMPOKTAiSrCE AND CHARACTER OF MILLED RICE IMPORTED. 



are very long and very slender and have a bright luster, but other- 

 wise they resemble the Siam rice. 



A few samples of several other rice types, including "Rangoon/ 

 "Maulmein, " and "Saigon/' were secured. These types of rice are 

 now of so little commercial importance in the United States that they 

 are not described nor are the analyses of such samples tabulated in 

 this bulletin. 



Plate I shows whole grains of the various types of rice described. 



MECHANICAL ANALYSES OF SAMPLES OF IMPORTED RICE. 



Practically all of the samples of imported rice upon which this 

 investigation was based were secured at the American ports of entry 

 by officials of the Bu- 



reau of Chemistry. The 

 samples and the infor- 

 mation secured at the 

 time of sampling were 

 submitted by that bu- 

 reau totheOffice of Grain 

 Standardization, where 

 the mechanical analyses 

 were made and the tabu- 

 lating work was done. 



Only those factors 

 which directly concern 

 the commercial grading 

 or affect the market 

 value of rice were con- 

 sidered in the analyses, 

 and they were deter- 

 mined on a 50-gram 

 portion of each sample. 

 In making the size sepa- 

 ration, the weighed por- 

 tion of the sample to 

 be analyzed was first 

 shaken on a flat metal 

 screen with round holes 

 six sixty-fourths of an 

 inch in diameter. The 

 particles which passed 

 through the screen were weighed, and the results, calculated to a 

 percentage basis, are recorded in Table \\ in the column headed 

 "Through No. 6 screen." The whole grains and broken particles 

 which did not pass through the screen were carefully separated by 



/'♦^ •••••••• 



S^vr*i •••••••• 





Fig. 1. — Whole and broken grains of Siam rice and a section ol 

 the screen through which they pass: A, "Whole grains;" B, 

 " half grains;" C, broken particles which pass through a No. G 

 Bcreet with round holes six sixty-fourths of an inch in diameter, 

 as shown Id D. (Naturalsize.) 



