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S. IKENO : 
4. All ce-plants are white. There are three kinds of whites, which I 
call I, II and III respectively. The vMte-I ( ccvrbb ) possesses perfectly 
white floral parts, while the white-II (ccRRRR) may produce few magenta 
stripes or spots on petals and few magenta filaments. The iohite-III is 
externally perfectly similar to the white-1, but is characterised by producing 
in certain crosses a number of the so-called “ pseudo-white,” in all probability 
according to Mendelian rule ; its genotypic constitution is yet unsettled. 
5. The factors R and R are generally in complete linkage or “ coupling,” 
and act like one single factor, but sometimes it changes into a partial, causing 
the production of a certain number of unexpected red individuals. 
6. The colour of vegetative organs and floral parts are correlated to 
each other. 
7. A small number of unexpected individuals of several kinds may 
often be produced, thus for instance, magenta or red, etc. is found among the 
oflspring of orange or white parent (selfed ! ) I have tried to explain such 
phenomena chiefly (but not all) by means of “ reverse mutations.” 
8. Bud-mutations were also observed. 
All expenses incurred in conducting the experiments described in this 
paper have been defrayed in part by grants from the Ministry of Educa¬ 
tion and from the “ Keimeikwai ” (Society whose object is to give pecuniary 
assistance to scientific investigators, etc., etc.) Thanks are due to the authori¬ 
ties of both. 
In practical work invaluable assistance was given by MM. M. Andô, K. 
Kimura, S. Nohara and Y. Tanihara ; I am much pleased to thank sincerely 
all these gentlemen for their kind assistance. 
