CHEMISTRY: E. W. WASHBURN 
569 
of the autumn and winter months at the beginning and end of the con- 
test year than between the egg production of these months and the 
productions of the intervening spring and summer months. 
The relationship between the intensity of correlation and the degree 
of separation of the periods of egg production compared is best illus- 
trated by the results for April and the five preceding and the six follow- 
•ing months. The magnitude of the constants decreases with fair 
regularity from March to the preceding November and from May to 
the following October. 
The second law is best exemplified by the coefficients measuring 
the relationship between November or October production and the 
record of the other months. . Note that in the biological year of this 
investigation these months do not fall in the same but in different 
calendar years. 
The results are to appear in detail in Genetics} 
1 Harris, Blakeslee, Warner, and Kirkpatrick, Genetics, Cambridge, 2, 1917, (36-77). 
Also these Proceedings, 3, 1917, (237-241). 
2 Harris, Biometrika, Cambridge, 6, 1909, (438-443). 
3 A treatment of the relationships between part of the year's yield and the output for 
the entire year is in preparation by Mr. L. E. Card for a Bulletin of the Storrs Experi- 
ment Station. 
TWO LAWS GOVERNING THE IONIZATION OF STRONG ELECTRO- 
LYTES IN DILUTE SOLUTIONS AND A NEW RULE FOR DE- 
TERMINING EQUIVALENT CONDUCTANCE AT INFINITE DILU- 
TION DERIVED FROM CONDUCTIVITY MEASUREMENTS WITH 
EXTREMELY DILUTED SOLUTIONS OF POTASSIUM CHLORITE 
By Edward W. Washburn 
DEPARTMENT OF CHEMISTRY, UNIVERSITY OF ILLINOIS 
Communicated by A. A. Noyes, August 4, 1917 
Any theoretical interpretation, in terms of the Ionic Theory, of the 
properties and behavior of any solution containing electrolytes involves 
as one of its essential factors a knowledge of the degrees of ionization of 
the electrolytes present in the solution. The most reliable method of 
determining the degree of ionization, ac, of a uni-univalent electrolyte at 
the concentration Cis by means of the relationship, = Ao/A^, where 
Ac is its equivalent conductance (corrected if necessary for viscosity 
effects) at the concentration C, and Ao is its equivalent conductance 
at zero concentration. 
The value of Ao is usually obtained by extrapolating to zero con- 
centration, some empirical function which is found to represent more 
