320 PRODUCTIVE FARMING 



dark or clouded parts in the contents. Other forms of egg 

 testers are in use. The eggs in an incubator are usually 

 tested the fifth or sixth day to see if a live, growing germ is 

 present. 



EXERCISE. Preserving Eggs. Let some of the pupils 

 preserve a few dozen fresh eggs. April or May is a good 

 time to preserve them for winter use. The eggs may be 

 kept at home and the report of the trial made to the class 

 a few months later. Directions: Scald out a stone jar with 

 boiling water. Prepare a solution, using water that has been 

 first boiled and then cooled to ordinary temperature. To 

 each seven quarts of water add one pint of water-glass, pur- 

 chased at a drug store. Select clean (not washed) fresh eggs, 

 and place them in the jar. Pour the liquid over the eggs, 

 covering them more than an inch above the top ones. Keep 

 them in a dark, cool, dry cellar. 



Problems. A flock containing 28 pullets laid 1600 eggs 

 in January, February and March 



1. What was the average number of eggs from each? 



2. What was the average number of eggs from the flock 

 for each of the 90 days? 



3. If 400 of the eggs were laid in January and sold at an 

 average price of 36 cents a dozen, what was the income for 

 January? 



4. If they laid 500 eggs in February worth 30 cents a 

 dozen, what was the income for the month? 



5. They laid 700 eggs in March which were sold at 18 

 cents a dozen. What was the amount of the month's sales? 



6. Find the total income from the 28 pullets for the three 

 months. 



7. Find the average income from each hen for the three 

 months. 



