ear which was experimented upon. The cross is usually made both ways, each variety being used both as pollen parent and as ovary parent. As soon as the cross-fertilised seeds are ripe they are gathered, and early in the autumn they are sown. It is almost necessary to sow them and other small quantities of seed wheat in an enclosure protected by wire netting. Otherwise they are very liable to suffer great damage from sparrows. The plants which grow from the cross-fertilised seeds are known as the first generation. In the case under consideration, they were found to produce ears of medium length and denseness, intermediate between the ears of the two parent varieties, and to be beardless. The first generation plants were also characterised by extraordinary vigour, as is the case with almost all first crosses, both in plants and animals. Their seed was saved and sown on a small plot, and produced some hundreds of plants of the second generation. On examining these second generation plants it was found that the characters of the parent varieties had rearranged themselves in every possible combination, long ears with and without beard, short ears with and without beard, intermediate ears with and without beard, as shown in Fig. 4. These different types were sorted out and counted, when they were found to be present in perfectly definite proportions. This is best shown in the form of a tabulated statement, thus: Ears Ears Ears Ears Ears Ears Long Long Medium Medium Short Short Beardless Bearded Beardless Bearded Beardless Bearded 3 1 6 2 3 1