Mayhew 1953 Mallard E65 Experimental March 3 Today 22 eggs, obtained from Mrs. W. W. Wilson, Davis, were set. The humidities being used this year are: 40%, 65%, 75%, + 85%. A series of eggs, to be used as a control, are being set at 75% R.H. without any dipping. In addition, each R.H. has the eggs divided into 2 groups: one group will be dipped in warm water every day, the other group will be dipped once a week. The eggs are picked up once or twice a week from Mrs. Wilson & stored in the departmental refrigerator at 41°F. The eggs are stored in the barn on the Wilson ranch at 52°F. April 9 Today all unhatched eggs from the March 10 setting were broken open and the contents examined. The results were: Egg No. R.H. Water Condition Remarks 23 65 1 quite small embryo 24 65 1 almost ready to pip 29 75 1 quite small embryo 33 85 1 pipped (too soon?) 35 85 2 pipped too soon 36 85 2 ~½ developed 38 40 1 almost ready to pip April 14 Today all unhatched eggs from the March 17 setting were broken open and the contents examined. The results of the examination were: