— 19 — 



The results of the trials recorded above may be recapitulated as 

 follows : — 



( 1 ) Sugi-seeds : Sugi-seeds kept in an ordinary room already showed 

 great fall in the germination percentage in September (the end of 

 summer) of the next year of the collected. In December these seeds had 

 totally lost their germinating power. Those kept in a cellar, however, 

 retained their germinating power till March, 1907, so that they could well 

 be used in sowing. The air-dried ones in the cellar especially showed the 

 high germination percentage of 66 and so the mode of preservation was 

 fully justified. 



(2) Karamatsu-seeds : The changes in germinating power of Kara- 

 matsu-seeds kept in a room were q^uite similar to those in the case of 

 Sugi. After the summer of 1906, more than half of the seeds had lost 

 their germinating power. 



The same seeds kept in a cellar, however, retained well their germi- 

 nating power and when sown in 1907 proved most satisfactory. Later, 

 in March, 1908, the seeds so kept were sown and germinated up to 60%. 

 It is indeed only after a lapse of 3 full years that the germinating power 

 began to fail. 



Karamatsu-seeds fire dried and those which were kept in bottles 

 free from air showed a considerable fall of germinating power just 

 after June, 1907, and in March, 1908, the germination percentage was 

 reduced to 1-2%. 



(3) Kuromatsu-seeds : These seeds, unlike those of Sugi and Kara- 

 matsu, kept in an ordinary room keep germinating power until after the 

 summer of the year subsequent to gathering. The germinating power of 

 Kuromatsu-seeds used in our investigations retained their germinating 

 power for the first 3 years. In September of the 4th year 12% of the 

 seeds still germinated and probably germinating power continued for half 

 of the ensuing year. 



The persistent nature of the germinating power in Kuromatsu-seeds 

 is still more conspicuous when they are kept in a cellar and indeed late 

 in September of the 4th year, 93-94% of the seeds sown germinated 

 which is not much different from the results for the fresh crop. 



(4) Kusu-seeds: The fall in germinating power in Kusu-seeds is 

 still more remarkable than in the case of Sugi. Thus, Kusu-seeds kept in 



