The Mode of Inheritance of Semi-Sterility in the Offspring of Certain Hyhrid Plants. 339 



VL-216-l-26-n, VL-297-11-12-I1, and VL-515-27-38-U. The letter n de- 

 notes the cessation of pedigree culture, and the beginning of mass culture. 



Fig. 17. Pods of three fifth-generation fertile lines from the Velvet by Lyon cross, 

 grown for their agricultural value. Natural size. 



24* 



