88 Dr. A. D. Waller. An Attempt to Estimate 



Table V. — Another series of three years (dates not known with 



certainty). 





1896 ? 



1897 ? 



1899. 



Average of 10 observations — 











"0002* 





0-0014 (irregular) 





0-0007* 



-002S 



0-0056 (regular) 





55 per cent. 



75 per cent. 



90 per cent. 



Table VI. — Beans (radicles only) of two years, 1895 and 1900. 





1895.. 



1900. 



1900. 





Soaked for 



Soaked for 



Soaked for 





3 — 5 hours. 



3 — 5 hoars. 



12 hours. 



1 Average of 10 obser rations . . 



-0016 



0-0120 



0-0510f 





irregular 









100 per cent. 



100 per cent. 





"weak" 



" strong " 



" strong" 



Table VII. — Twelve Intact Beans of 1895, soaked in water at 24° for 

 12 hours, then laid on wet flannel in incubator for a further 

 12 hours at 2±% measured electrically on December 17, and for- 

 warded to Kew for independent test by germination. I have to 

 thank Sir "W. Thiselton-Dyer for the account of their subsequent 

 behaviour. 



Bean ~No. 1 



4 

 5 

 6 

 7 

 8 

 9 

 10 

 11 

 12 



Blaze reaction; 



Subsequent behaviour at Kew. 



Date of germination. Condition. 



0-0050 



December 28 



-0025 



Failed 



-0175 



December 22 



-0125 



December 27 







Tailed 



-oioo 



December 22 







Failed 



o-oioo 



December 25 







Failed 



-0050 



December 31 



o -oioo 



December 24 



o -oioo 



December 24 



Weak* 



btrong. 

 Moderate. 



Strong. 



Strong. 



Weak.* 

 Strong. 

 Strong. 



* The responses were small and irregular, and in the case of the entire seeds 

 the arithmetical mean of the series of 10 is of -wrong — i.e., of polarisation- 

 direction. The electrical resistance of all the radicles was tested and found to be 

 within the limits of 100,000 and 200,000 ohms. 



f The average value obtained from 20 entire beans was -0040. 



The maximum value observed on the radicles of 1900 was '1200. 



X Those marked weak are not likely to get beyond the cotyledon stage. 



