HEREDITY AND GERMINAL CONTINUITY = 315 
questions of organic evolution, raised through the publications 
of Darwin, the ideas of Mendel attracted very little attention. 
The principles that he established were re-discovered in 1900 
by De Vries and other botanists, and thus naturalists were led 
to look up the work of Mendel. 
Fic. 95.—GREGOR MENDEL, 1822-1884. 
Permission of Professor Bateson. 
The great discovery of Mendel may be called that of 
the purity of the germ-cells. By cross- fertilization of pure 
breeds of peas of different colors and shapes he obtained 
hybrids. The hybrid embodied the characteristics of the 
crossed peas; one of the characteristics appearing, and the 
other being held in abeyance—present within the organization 
