4 



dicated by the horizontal lines on each chart. The 

 numbers at the ends of each line show the actual 

 distance, in inches and centimeters, from the base 

 of the chart. For example : The lower limit of U. S. 

 size 21 is 20 inches (or 50 centimeters), and the 

 upper limit of this size is 22 inches (or 55 centi- 

 meters ) . 



The " range of the size " is the actual length of the 

 size expressed in terms of its lower and upper limits. 

 For example : The range of U. S. size 21 is from 20 

 to 22 inches (or 50 to 55 centimeters). 



The " variation of a size " is the distance between 

 the lower and upper limits of the size. For example : 

 The variation of U. S. size 21 is 2 inches (or 5 

 centimeters ) . 



The requirements as to the percentage of leaves 

 of a lot or package of tobacco that must fall within 

 the range of a particular size shall apply as set 

 forth in the requirements of each chart unless other- 

 wise specified in the standard grades of a particular 

 type or quality of tobacco. If in any case it is found 

 advisable, it may be specified that all tobacco under 

 the lower limit of the shortest size used in the grades 

 of a particular type shall be included in such shortest 

 size ; and that all tobacco above the upper limit of 

 the longest size used in said grades shall be included 

 in such longest size. 



When length is a factor of the standard grades of 

 a particular type, the sizes to be used in such grades 

 shall be specified by the United States Department of 

 Agriculture. For types on which no sizes are speci- 

 fied, the choice of the sizes is optional with the trade. 

 In the latter case the selection of the chart to be 

 used should be governed by trade requirements, and 

 the shortest and longest sizes necessary for a par- 

 ticular type and quality of tobacco are dependent 

 upon its natural growth. 



