128 



BOTAXICAL GAZETTE 



[august 



saying that the time which must elapse before such a conclusion is 

 justified varies with the species, as does the "normal" temperature. 



TABLE XVII 



Date 



December 12 



14 

 14 



16 



17 



18 



20 



Time 



11:30 A.M 



i : 30 P.M 



9:00 A.M 

 4:30 P.M 

 4:00 P.M 

 llOO P.M 

 2:00 P.M 

 I2:oo M. 

 3:00 P.M 



Room 



i 9 ?oC 

 19.0 



18.75 



18.75 

 18.5 



18. s 



18.5 



18.5 

 19.0 



Talaverra spring 

 wheat, 1871 



l8?I C. 

 18. 1 



18. 1 

 18. 1 

 18. 1 

 18.0 

 18.O 



1795 

 17.9 



California white 

 spring wheat, 1872 



i7?6C 



17.6 



17.6 



17.6 



17.6 



17.6 



17-5 



17-5 

 17.4 



Table XVIII records the temperatures developed in silvered 

 Dewar flasks by three lots of wheat of the same variety, marked 

 no. 791, of the crops of 1909, 1910, 191 1 ; 10 grams of each lot were 



TABLE XVIII 



Date 



February 



5 

 6 



6 

 6 



7 



7 

 8 



8 



8 



9 



10 



10 

 11 

 11 

 12 

 12 



13 



Time 



1:30 



4:30 

 8:30 



5-30 



9-30 

 1:30 



4:30 

 2:00 



8:30 

 4:00 



8:30 



4*.30 

 8:30 



4:30 

 8:30 



P.M. 

 P.M. 

 A.M. 

 P.M. 

 A.M. 

 P.M. 

 P.M. 

 P.M. 

 A.M. 

 P.M. 

 A.M. 

 P.M. 

 A.M. 

 P.M. 

 A . II . 



1:30 P.M. 

 I0:00 A.M. 



Room 



17.5 c. 



17.0 

 17.0 

 17.O 

 17.O 



I7.25 

 17.O 



17.25 



17.O 



I7.25 

 17.0 



17.O 



17.O 



17.O 



17.O 



17.O 



17.O 



Increase in temperature between first 

 and highest readings 



IQ39 



i6?7C. 

 16.7 



16.8 



16.9 



17.0 



17. 1 



173 



173 



174 



177 

 18. 1 



18.2 



18.3 



18.3 

 18.2 



18. 1 



i?6 



1910 



i6?7 C. 

 16.8 



16.9 



17.0 



17.2 



17-3 

 17.6 



17-7 

 17.7 



18. 1 



18.6 



18.7 



18.9 



19.0 



19.0 



19.0 



18.8 



2?3 



1911 



16 



17 

 17 



17 



17 

 18 



19 



19 



20 



19 

 19 

 19 



19 



18 



18 

 18 



8C. 



3 

 4 

 4 



7 



3 



2 



4 



5 

 o 



7 

 6 



3 



2 



9 

 8 



7 



3-2 



used, being washed and soaked in the usual ways. As the table 

 shows, the rise in temperature of the ion seed was much more 



more 



in 



maximum temperatu 



