, for his assistance and encouragement during the course' of this work. Paper from the Department of Botany at the University of Michigan. No. 777. 2 A caprified fig is one which has been pollinated by means of the insect Blastophaga, which grows in the caprifigs. These figs contain seeds. S The writer wishes to express his thanks to L. J. Alexander of the Ohio Agricultural Experiment Station for suggesting the use of the pollen of L. peruviawum to produce parthenocarpy in L. esculentum and also for the seeds of L. peruvianum.