WATER GLASS or soluble glass is a pop ular term for potassium or sodium sili cate and is commonly sold in the form of a syrupy liquid. It can be bought for 2 to 10 cents a pound. In making a water glass solution for preserving eggs, boil pure water and allow it to cool, then to each 10 quarts of water add from 1 pint to a quart of water glass. By either the lime water method or the use of water glass, eggs can be kept in good condition for six months to a year.
IN PRESERVING EGGS in these materials use only fresh eggs. Before treating they should he allowed to become thor oughly cooled. The solution in which they are kept should also be cold. If the eggs are kept at a high temperature, 70 to 80' F., they deteriorate rapidly in spite of the preservative. They should be stored in a cool, dark place. The nearer 35° F. they can be held, the better the eggs will keep. A 5-gallon solution of water glass is sufficient to cover 50 dozen eggs and may be used over and over again. Eggs thus pre served in water glass at the North Da kota station, for months, were fully equal to fresh market eggs for cooking making frosting, etc. Water glass can be bought in all drug stores Desiccated eggs About 3,750,000 dozen eggs are desiccated each year in the United States. One method is to break the eggs into a vat, to which warm water is added, and mix into a homo geneous fluid, after which they are evaporated down into a yellow granular meal. Thus treated, they can be pre served indefinitely, and 1 pound is con sidered equal to 4 dozen of fresh eggs for food or manufacturing purposes.
Sometimes the eggs are removed from the shells and stored in bulk in cans containing about 50 pounds each. They are then kept in cold storage at a tem perature of about 30° F. until needed.
Factors affecting fertility and hatch ing of eggs With bens that have been laying but a short time, hatches of 70 to 80 per cent of the eggs incubated are generally obtained. There is great va riability of the fertility of the egg yield of different bens. Data have been ob tained which show that some birds yield eggs that are all highly fertile. With others every egg is completely infertile. "Again, some hens are very irregular in the fertility of their eggs, an egg laid one day yielding a chick, while that laid on the next is completely infertile; or they are fertile for a day or two or more and then infertile, becoming fer tile again after one, two or more eggs are laid. This seems to be true of some individuals, whether they are laying reg ularly or irregularly, or whether they have been laying a long or short time. The eggs from other hens seem to be slightly fertile, the embryo dying before the tenth or twelfth day. This seems to be regular with some hens and irreg ular with others."