MAPLE SUGAR. 



37 



The southern maple-producing States, West Virginia, Indiana, 

 Ohio, Pennsylvania, and Maryland, show higher figures than the 

 northern States, Vermont, New Hampshire, Maine, and Michigan. 

 This relationship becomes more evident when the figures are inserted 

 in a map of the United States in the region from which the samples 

 come. In the western group, West Virginia, Maryland, Pennsyl- 

 vania, Ohio, Indiana, and Michigan, the sectional differences are 

 very marked. With the exception Of the Maryland figures, the drop 

 in all determinations as one goes north is very marked. From West 



Fig. 2. — Map showing effect of environment on analytical results of maple sugar, United States. 



Virginia to Michigan there is a drop of 0.47 per cent in ash, of 0.25 

 per cent in insoluble ash, of 1.47 in Winton lead number and 1.16 

 in Ross lead number, and of 0.55 in the malic acid value. In the 

 eastern section, comprising New York, Massachusetts, Vermont, New 

 Hampshire, and Maine, the drop as one goes north is not so great. 

 From Massachusetts to Maine, the drop in total ash is 0.08 per 

 cent, in insoluble ash none, in Winton lead number 0.24, in Ross 

 lead number none, and in malic acid value 0.17. 



It is evident, then, that environment plays some part in the com- 

 position of maple sugar. 



