Chase.] 



252 



[April 21, 



to complete the data for comparisons of probable error, I repeat this group, 

 with artiad divisors. 



Metallic, U: a = D?- 



The mean deviation is .00885. 



181. Comparatim Summary. 



Although I have shown in Note 149, that Schuster's test will often fail 



to detect harmonies which really exist, it may be used with advantage in 



many instances of comparative probability. The following tables seem to 



furnish indisputable evidence of phyllotactic influence upon atomicity. 



Logarithms of Probability. 



