Abstract
1. The rice caryopsis developed in its natural condition assumes a characteristic size and form, filling up the inside of fertile lemma and palea, which hold tightly together. If the lemma and palea are partly cut off soon after anthesis, the caryopsis takes a peculiar form, increasing its length with the decrease of the breadth. The size and form of the caryopsis developed under such conditions is demonstrated to be still characteristic for each variety.
