Chase.] 



262 



[April 21, 



growth. In Note 54 I showed that a large number of the elements contain 

 either 7 or 8, as one of the factors of the integers which most nearly repre- 

 sent their atomicity according to the hypotheses of Dalton and Prout. 

 These two numbers denote respectively the simplest phyllotactic sub-mul- 

 tiples of N and O. If we use the former as a divisor of the perissads, treat- 

 ing the remainders as in the foregoing notes, we get the following results : 



Log. R. 

 X 8633229 



.3005955 



.4743620 

 T. 6201360 



.3044905 

 T. 568201 7 



.4421661 

 T. 7458552 



-4273238 

 T. 8543060 



.0972573 



Sum of Tri- or Pentavalent logarithms 



2". 6980170 



"2.3222193 

 .4709983 

 .3184807 



T. 9800034 

 .3939260 



T. 1903317 

 .4855795 



T. 1583625 

 .3533391 



■2.6732404 



Log. of Monatomic probability ; 



" Tri- and Pentavalent " 

 " Total Perissad 



log. 1.75'i — 2".6980170 = 3.9754016 



" 1.759 _ 2".6732404 = 3.5141020 



7.4895036 



202. Oxygen and the Artiads. 

 If we use 8 as a divisor of the Artiads, we get the following results 



