APPENDIX TABLE I.-Annual Frequency Distributions of all Wyandotte Pullets in Contests of 1911-1919.

SIGNIFICANCE OF DIFFERENCES IN ANNUAL MEANS, 1911-19.

1911 1912 1913 1914 1915 1916 1917 1918 1919

1919 1.46 1.59 2.76 .54 131 1.01 1.84 3.08]

3.08

This table was constructed to facilitate the interpretation of differences in mean annual egg production. For each of the pairs of years listed, the difference between the means was found, its probable error calculated by the usual method, and the difference then divided by its probable error. The quotient (Di for each pair of years has been entered at the intersection of their columns. Thus the difference in mean production between 1911 and 1912 is .15 times its probable error; between 1911 and 1913 the difference is equal to 1.32 times its probable error, etc.

(E Diff.)

APPENDIX TABLE IIA

FREQUENCY DISTRIBUTION OF EGG PRODUCTION IN EACH MONTH OF THE PULLET YEAR. 903 WY

PULLETS. CONTESTS OF 1911-1919.

YANDOTTE

No. of Pullets Laying in Each Month the Number of Eggs
Designated in Column at Left.

APPENDIX TABLE IIB

FREQUENCY DISTRIBUTION OF EGG PRODUCTION IN EACH MONTH OF THE PULLET YEAR. 903 WYANDOTTE PULLETS. CONTESTS OF 1911-1919.

Percentage of Pullets Laying in Each Month the Number of Eggs Des-
ignated in Column at Left.

1

3.43 2.55 5.20 2.77 1.00

1.11

57.92 39.53 20.49 8.64 1.11 .66 1.11 2.66 4.10

4.54 6.75 20.82 1.77 2.43 5.54

Total 100.00 99.96 100.01 99.98 99.96 99.97 99.97 99.97 100.01 100.02 99.97 99 98

STORRS

Agricultural Experiment Station

STORRS, CONNECTICUT

A STATISTICAL STUDY OF EGG PRODUCTION
IN FOUR BREEDS OF THE DOMESTIC

FOWL

IN FOUR PARTS

PART II-EGG PRODUCTION OF RHODE ISLAND

REDS.

By

L. C. DUNN

A SUMMARY AND ANALYSIS OF THE RECORDS OF NINE INTERNA-
TIONAL EGG LAYING CONTESTS HELD AT STORRS AGRICULTURAL
EXPERIMENT STATION, 1911-1920, UNDER THE DIRECTION

OF WM. F. KIRKPATRICK, PROFESSOR OF POULTRY HUS-
BANDRY IN THE CONNECTICUT AGRICULTURAL

COLLEGE.