Exogamy and the Classificatory System of Relationship.

such marked divergence from the restricted method of fruit and seed production peculiar to other varieties of this species and to all other species of tobacco as far as known. The experiments reported upon above have, in part, been made possible by an allotment from that portion of the Adams Fund of the United States Department of Agriculture granted to the Agricultural Experiment Station of the University of California. A more detailed report will appear in the University of California Publications in Botany, Volume 5.