HOME ECONOMICS FOR SOUTHERN SCHOOLS. ieee) be} 
compound. Alkalis soften water by throwing the mineral com- 
pounds out of solution. Care must be taken to avoid using an alkali 
which will harm the material to be washed. 
References.—Rose, The Laundry, Cornell Reading Courses, 1 (1912), - 
No. 11, pp. 114-117; Handy and Pract. Farm Libr. [Missouri], Mo. 
Bul., 13 (1915), No. 2, p. 82; any good book on home laundry 
work. 
Correlation.—Chemistry: Alkalis and the means of detecting them. 
Supplementary topic.—Describe the water supplies on your home- 
stead, and suggest ways of making the water supply more convenient 
at the house, 
LESSON 12. 
Problem.—To recook any jelly which was found unsatisfactory at 
the last lesson. 
Points to be brought out.—If an examination of the juice shows too 
little pectin, add some from another source, such as apple or white 
rind of the orange or lemon. If the juice is not sufficiently acid, add 
an acid from another source, lemon juice or citric acid. In case the 
proper amount of sugar has not been used, make the necessary cor- 
rection. In some cases a soft jelly may be stiffened by allowing it 
to stand for a short time in the sun. 
References—Univ. Ill. Bul., 8 (1911), No. 7, Goldthwaite; Pres- 
ervation of Food in the Home, Univ. Mo. Bul., 15 (1914), No. 7, Cov- 
ering with paraffin; U.S. Dept. Agr., Farmers’ Buls. 78*, p. 29; 122*, 
Do 20s lio. ) 
Correlation.—Arithmetic: Estimation of the cost of the jelly. 
Comparison in cost with the commercial product. 
Supplementary toprc.—List the kinds of fruits you know which will 
and which will not jelly. Ascertain the localities in the United States 
in which fruit raising is an important industry. 
LESSON 13. 
Problem.—Let each student clean her room and write an account 
of the process, giving the reason for eachstep. Discuss these accounts 
in class and make a plan to be followed by each of the girls in the care 
of her room. 
Points to be brought out.—Thorough airing of bed and room is neces- 
sary. In cleaning care should be taken not to distribute dust. In 
dusting it is best to work downward from the upper part of the room. 
References.—Watson, Rules for Cleaning, Cornell Reading Courses, 
1 (1912), No. 23; a good book on the care of the house. 
Oorrelation.—Arithmetic or English: Time and energy cost of clean- 
ing rooms. Cost of equipment and supplies used. 
