178 STATE BOARD OF AGRICULTURE. 



NUMBER OF SAMPLES, PER CENT OF SUGAR IN BEETS AND PURITY OF BEETS GROWN 

 IN THIRTEEN COQNTIES OF UPPER PENINSULA. 



No. of Ave. per cent of Average 



Counties. samples. sugar in beet. purity. 



Alger 5 13.4 82. 



Baraga 18 15.9 82.8 



Chippewa 37 15.3 83.9 



Delta 35 15.7 81.75 



Dickinson 2 14.1 81.2 



Houghton 7 17.4 84.21 



Iron 2 15. 86.4 



Luce 1 17.11 92. 



Mackinac : 8 16.55 84.57 



Marquette 10 13.85 80.67 



Menominee 17 16.6 86.3 



Ontonagon 5 15.0 87.64 



Schoolcraft 6 15.16 84.7 



The factor used in reducing the sugar in juice to sugar in beet was .92. 

 The purity of the beets was low and they were seldom fully ripe. A 

 consideration of the table lends color to the belief that the Upper Penin- 

 sula can produce beets very rich in sugar. One possible reason for this 

 fact is that during the growing season, the higher the latitude the more 

 hours the sun is above the horizon. In latitude 47 degrees, for instance, 

 the sun is above the horizon, for any given point, 69.13 hours longer 

 than in latitude 42, in the six months between April 15th and October 

 15th. The storing of sugar by the leaves is dependent on light, either 

 the direct rays of the sun or sunlight diffused through clouds. These 

 northern latitudes, therefore, have a marked advantage in the excess 

 of sunlight during the growing months. 



B. Compilation of Records of Analyses of Beets. 



Each autumn since 1897, in(;lusive, it has been customary for the 

 chemist of the station to analyze sara})les of beets sent in for the pur- 

 pose. The results of these analyses have never been published. They 

 are submitted here to {)roperly conclude the work of the Station in this 

 phase of the sugar beet investigation. 



These are given in the following table. Opposite the name of each 

 county are the number of samy)les sent in from that county, the average 

 per cent of sugar in the beet and the average purity. 



