Above. Center. Marsh outlet requiring continual labor to keep open. drainage. Below. Conditions one year later; natural sand fill removes danger of a. Leaves of the gray birch, Betula populifolia, mined by a European sawfly leaf-miner, Fenusa pumila Klug. Connecticut Agricultural Experiment Station New Haven, Connecticut The Improvement of Naturally CrossPollinated Plants by Selection in Self-Fertilized Lines I. THE PRODUCTION OF INBRED STRAINS D. F. JONES P. C. MANGELSDORF The Bulletins of this Station are mailed free to citizens of Connecticut who apply for them, and to other applicants as far as the editions permit. |