CONTENTS. 



Page. 



Introduction 5 



Factors to be considered in interpreting analytical results 6 



Methods of sampling 8 



Sampling from the field 9 



Sampling from pile, wagon, or car 9 



Laboratory sampling and pulping 10 



Sampling and testing seed beets 12 



Methods for determining sugar 14 



Indirect method 14 



Errors of the method 15 



Hydraulic press 17 



Direct methods 17 



Water methods 17 



Cold-water digestion method of Pellet 17 



Ccld- water digestion method of Sachs Le Docte 18 



Hot-water digestion method 18 



Hot- water digestion method of Sachs Le Docte 19 



Herzfeld's modification of the Sachs Le Docte method 19 



Alcohol methods 20 



Cold alcohol digestion method 20 



Hot alcohol digestion method 21 



Alcohol extraction method 21 



Discussion of methods 22 



Detailed analytical data, 1905 to 1910 23 



Yearly average analytical data by States, from 1884 to 1900 and from 1905 to 



1910 36 



Bibliography of chemical literature on methods of analyzing beets (1839 to 1906, 



inclusive) 40 



ILLUSTRATIONS. 



PLATES. 



Page. 



Apparatus for beet analysis Frontispiece. 



PLATE I. Hydraulic press 16 



TEXT FIGURES. 



FIG. 1. Horizontal sectioning of beets 10 



2. Vertical sectioning of beets 11 



3. Correct position of boring rasp in beet 13 



4. Boring rasp 13 



5. Herzfeld's metallic beaker. . . 20 



