1914] 



DA RSI E, ELLIOTT & PEIRCE— GERMINATING POWER 



133 



flasks are not equally perfect insulators, and that the various con- 

 ditions of harvesting and storage would also affect the results. 

 Nevertheless, it is plain that the evidence of Dewar flask and of 

 seed bed are quite consistent. Germination is increasingly tardy 



TABLE XXIII 



Wheat 



Talaverra spring 

 California white 



spring 



No. 791 



No. 98 



No. 1746 



No. 639 , 



No. 114 



Central Kansas I 

 Central Kansas II 

 Iowa white winter 



Year 



1871 



1872 

 1909 

 1910 

 1911 

 1909 

 1910 

 1911 



No. OF 



KER- 

 NELS 



50 



50 



50 



50 



So 

 So 



50 



1370 



So 



1907 



5° 



1908 



5° 



1909 



5° 



1910 



5° 



1911 



5o 



1907 



50 



1908 



50 



1909 



5° 



1910 



50 



1911 



50 



1907 



So 



1909 



50 



1910 



50 



1911 



50 



1876 



50 



1876 



50 



1876 



50 



1877 



50 



1877 



50 



1887 



50 



no. sprouting 

 January 





25 



45 



47 



47 

 28 



34 



27 



6 



36 



36 



39 

 26 



15 



26 



4i 

 50 



34 



43 

 42 



44 



o 

 o 



27 



46 



47 

 49 



35 

 36 



4i 



29 

 6 



45 

 38 



43 

 26 



18 

 29 



42 

 50 

 36 

 44 

 44 

 44 



o 

 o 



Per 

 cent- 

 ace 



SPR. 



Jan. 27 



92 



94 



98 



70 



72 



82 



Jan. 30 

 o 



58 



12 



90 

 76 



86 

 52 



58 



84 

 100 



72 



88 



88 



88 



o 



o 



o 



o 



o 



o 



Lengths of plumules in cm. 



January 27-28 



Short- 

 est 



0.4 

 I .O 

 I.I 



0.3 

 0.2 



1.0 



0.7 



i-4 

 03 

 0.3 



1-3 



0.2 



0.2 



0.3 

 0.4 



0.2 



0.2 



0.6 



1.0 



03 



o 

 o 



Long- 

 est 



Ave rage 



7.0 

 8.1 



8.5 



6.8 

 7.8 



7-1 



7-3 



8.8 



8-5 

 8.1 



8-5 

 6.2 



3-4 

 6.5 

 7-3 



7-4 

 6.2 



6.9 



6.0 



8.2 



4-75 

 5- 6 7 



5 95 



3-73 

 4.28 



463 



3.62 

 6.41 



3 -46 

 2.81 



5-35 

 2.66 



1.20 



249 



2.71 



2.41 



2-75 

 384 

 2.94 



3-32 



o 



o 



o 

 o 



Percent 

 age of 

 growth 



74 



88 



92 



58 

 66 



72 



56 

 100 



S3 



43 



83 

 32 

 18 



38 



42 



37 

 42 



59 

 45 

 5i 



o 

 o 



the older the seed. Furthermore, the percentages of growth, as 

 shown by the lengths of the plumule, accord perfectly with the 

 percentages of germination and correspond with the tempera- 

 tun attained in the flasks. In varieties numbered 791 and 98. 

 for example, there is the same regular decrease in growth as in 



