The fruit-breeding experiments at this station since 1895 have yielded the many new hardy fruits described in Bulletin No. 224. Some of them have become popular and are now widely grown in many western states and north into Canada. These thirty-three years of work in producing several hundred thousand fruit seedlings have enabled the writer to make some deductions which have been presented in addresses prepared for International Science meetings and published in the reports of these associations. It appears best at this time to publish three of the papers in order to make them available to a larger audience. In recent years the land in this department was all planted to fruit seedlings and there was no more land available. Since there was n...