TABULATION OF DATA. 19 



TABULATION OF DESCRIPTIVE DATA AND RESULTS OF 



EXAMINATION. 



The results of the analysis of the samples are given in the table 

 on page 20, the samples being designated by the serial number. The 

 results are arranged by States and counties and the location of the 

 county in the State is designated by the usual symbols, namely, D 

 center of the State, Q north of center, H^ southeast of center, etc. 

 The date of the opening of the sugar season and the average length 

 of the season are given in a general way, but these figures, of course, 

 vary somewhat in different years. The approximate number and 

 the variety of trees tapped are also stated. The sap data include 

 the amount of sap (expressed either in gallons or its equivalent as 

 pounds of maple sugar) that can be obtained from a tree during 

 the average season; also the number of gallons of sap necessary to 

 make 1 gallon of sirup. The manufacturing data describe the kind 

 of bucket (whether uncovered or covered), the method of evaporation 

 (whether in pan, kettle, or evaporator), the method of cleansing, 

 and the run from which the sample was taken. The results of the 

 physical and chemical examination, together with the polarization 

 data, complete the table. The figures for the lead number, malic 

 acid value, and ash have been calculated to dry substance for better 

 comparison and are given in the table beginning on page 67. Averages 

 have been determined for the samples from the individual States, 

 from Canada, and from the United States as a whole, as well as 

 for all of the samples collected. The bracketed data in the ninth 

 column of the table, headed "run," refer to samples from the same 

 maker. 



