specified that 7.~ per cent of the leaves of the lot or 

 package must fall within the range of the size. The 

 r. s. size numbers of these charts are based upon the 

 fixed variation of each chart. Thus the sizes of the 

 chart shown in Figure 4 are all in the forties, indi- 

 cating the 4-inch variation in these Bizes. In like 

 manner, the sizes of the chart shown In Figure 5 are 

 in the sixties, Indicating the 0-inch variation of the 

 sizes, and the sizes of the chart shown in Figure 6 are 

 in the eighties, indicating the 8-inch variation of these 

 sizes. 



The specific range in inches of a particular size of 

 the charts shown in Figures 4. 5, and 6 is easily de- 

 termined from the size number. Multiply the first 

 digit of any size number by the second digit of that 

 number and the product will represent the lower limit 

 of the size in inches. Add the fixed variation of the 

 size to the lower limit thus found, and the sum is the 

 upper limit of the size. For example : To find the 

 actual range covered by U. S. size 43. multiply the 

 fiist digit of the size number (which is 4) by the 

 second digit of the number (which is 3), and the 

 product (which is 12) will represent the lower limit 

 in inches. Add to the lower limit of the size (which 

 has beeu determined to be 12 inches ) the fixed varia- 

 tion of the size (which is 4 inches), and the upper 

 limit of the size will be found (which is 16 inches). 



The following are illustrations of how the range of 

 a size is found from the size number in the 6-inch and 

 8-inch series : 



U. S. Size 63 U. s. Size 82 



6X3=18 (lower limit). 8x2=16 (lower limit). 



18 + 6=24 (upper limit). 16 + 8=24 (upper limit) . 



The range is 18 to 24 The ran ? r \ s 10 to 24 



inch inches. 



All of the sizes shown on the six charts are not in- 

 tended for actual use in sizing tobacco. Many of the 

 sizes, and especially those under 12 inches, are shown 

 primarily to illustrate the system. However, some of 

 the short sizes may be used in certain types of to- 

 bacco, such as California Turkish and cigar wrapper 

 tobacco. For some types of tobacco a number of the 

 longer sizes are also unnecessary. 



DEFINITIONS AND RULES 



The " limits of a size " are the fixed lower and 

 upper boundaries of the size, or its minimum and 

 maximum lengths. The limits of the sizes are in- 



