The results indicate that the usually accepted methods of sampling mangel roots by means of horizontal cores in a north-south direction through the largest diameter of the root or one-third way down from the crown, are subject to greater inaccuracies than similar cores taken twothirds to three-quarters way down, which gave consistently samples of satisfactory accuracy.

Our best thanks are due to members of the College StafE for helpful criticism of all stages of the work, also to the Edinburgh and East of Scotland College of Agriculture for a detailed description of technique and apparatus in use for their work on dry matter in root crops.