46 BULLETIN 540, U. S. DEPARTMENT OF AGRICULTURE. 
cake may be cheapened by substituting forsome of the eggs a liquid, 
preferably water, and baking powder, in the proportion of one-half 
teaspoonful of baking powder and two and one-half tablespoonfuls 
of water for each egg. The general proportions for sponge cake are 
one-fourth cup of flour and one-fourth cup of sugar to each egg, or 
equal amounts of egg, flour, and sugar, since each egg is supposed to 
measure one-fourth cup. Bake in an oven at 175° C. (350° F.). 
References.—Textbook on foods. Any good recipe book. 
Correlation.—Physics: Expansion of air. 
Supplementary topic—Discuss the omission of elaborate desserts 
in a home in which the mother is overworked. List desserts suitable 
for different occasions during the year. 
LESSON 128. 
Problem.—To seam the skirt. 
Points to be brought out.—The kind of seams used should be adapted 
to the material. If it is heavy, the seams should be tailor-stitched 
and the edges overcast or bound. [If it is light, French seams may 
be used. | 
References.—Same as in Lesson 120. 
Supplementary topic.—Discuss means of keeping the father’s and 
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brother’s clothing neat and attractive—proper ways of folding and | 
hanging, coat forms, pressing, ‘‘dry cleaning,” etc. Neatness in 
working clothes. How often should overalls be washed ? 
LESSON 129. ~ 
Problem.—To determine the reasons for the great fluctuations in 
the price of eggs. Preservation of eggs. 
Points to be brought out—Large numbers of eggs are lost through 
inefficient handling in the homes and on the farm. Infertile eggs — 
keep very much longer than the fertile ones. Water glass is very 
useful as a preservative. Evidence seems to point to the spring egg 
as the best to preserve. 
References.—U.S. Dept. Agr., Farmers’ Buls. 103*, p. 17; 273*, p.17; 
296*, p. 29; 353*, p. 14; Production and Handling of Market Eggs, 
Mo. State Poultry Expt. Sta. Bul. 5 (1915). 
Correlation.—Arithmetic: Calculate the increase in price of 50 
dozens of eggs when held over from April until December, allowing 
for cost of water glass, crocks, and time necessary in handling. How 
many eggs might well thus be preserved for your family? How 
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much would be saved by using preserved eggs and selling your fresh 
eges in winter ? 
Supplementary topic.—Describe a plan for a cooperative egg-ship- 4 
ping association; the shipping of eggs by parcel post. U.S. Dept. — 
Agr. Farmers’ Bul. 656, Community Egg Circle. 
