22 — 



Temperate and Moisture in the Room where Seeds were Preserved 



(Mean of the Month) 



Year 



1910 



Temperature and 

 Humidity- 



Air tem- (Maximum 

 perature, C°.\ Minimum 

 Relative humidity, ^ . . 



Air tem- (Maximum 



1911 perature, C"'. (Minimum 



lEelative humidity, fi . . 



1912 



Air tem- (Maximum 

 perature, C. I Minimum 

 Relative humidity, % . . 



1-3 ftH 



19.023.024.8 



15,8 20. 1 122.2 

 74.6,85.987.8 





> u 



O J 0^ 



Remarks 



26.621.52 1. 3, 18.5 

 23.217.7il5.7| 8.3 

 84.883.683.2 71.7, 



19.621.420.819.9,21.3 25.128.1 



2.5] 4.1 6,7,1 1.4113.7 18.623.1 



65.4 62. 1 170.0 68,673.6'84.7,83.4 



3.5: 

 65.7 



28.9 26.7 2 r3| 19.4 11.2 

 23.62,11114.610.6; 3.5 



82.5'82.5 76.671.7,66.0 



6.6 I0.3|18.621.9|22.524.327.529.9l23.921. 5114.3: 8.8 



0.8 3.7 6.2'll.lll5.1 18.622.323.418.714.2 8.5 3.8 



57.8 65.6 66.6 68.8'75.0,83.o!83.0 8 1 ,0 83,0 78.0 74.0 72.0 



' I I I 1 I I I ! 



The consider- 

 able rise of 

 the maximum 

 temperatuire 

 witnessed bet- 

 ween Dec, 1910 

 and Feb., 1911, 

 is explained 

 by the use of 

 a stove during 

 the day time. 



A glance on the above table shows that the persistence of germinat- 

 ing power of seeds as well as the gradual fall in the percentage of 

 germinating seeds varies considerably with the tree species and the method 

 of preservation adopted. Thus the seeds of Akamatsu kept in a cellar in 

 hermetically closed bottles have the same germinating power as fresh 

 ones as late as December of the 4th year while Hinoki-seeds, whatever 

 method of preservation be adopted, lose their germinating power almost 

 entirely by March of the 3rd year. As to Sugi-seeds they stand midway 

 between those of the two conifers mentioned above, the best seeds retain- 

 ing geminating power to a certain extent till December of the 4th year. 

 This conifer seeds to be used in propagation will not, however, be kept later 

 than June of the 3rd year. 



Turning next to the methods of perservation we find that seeds 

 without regard to tree species kept in bottles with cotton stoppers in an 

 ordinary room showed the most rapid fall of germinating power while 

 those kept in air-tight bottles in an ordinary room came next to them. 

 Seeds kept in air-tight bottles in a cellar kept their germinating 

 power best. Seeds kept in bottles provided with cotton stopper in the 

 cellar showed the highest geminating power in the case of Sugi and 

 Hinoki but the same method proved a negative result in the case of 

 Akamatsu-seeds. As to Sugi-and Hinoki-seeds, kept on a table exposed to 

 the light, showed equally or better results compared with those preserved in 

 the dark. As to Akamatsu, nothing can be said with certainty on the subject. 



