ture should prove very successful in the hatching of ostrich eggs. Incubators made for hatching ostrich eggs are constructed to hold from 30 to 50 eggs, which size is preferred by the ostrich breeders.

Eggs are turned from one to three times daily and are examined frequently to note the evaporation of the moisture and the development of the embryo. Water is placed in the incubator about the fourth week and left in until the chicks are about through hatching. The time to put in the water and the proper amount depend on local conditions. Each operator works out this problem for himself, carefully noting the size of the air cell in the egg. The period of incubation is forty-two days, and toward the end of this period, when the chick "peeps" in the shell, the operator cracks the shell, thus aiding the chick to escape.

Natural incubation is used and preferred by a few breeders. It would seem that if removing the eggs from an ostrich hen as fast as they are laid would increase the annual egg yield of each hen, it would be advisable to do this, and to use artificial methods of incubation entirely. On the other hand, it may be that better hatches and stronger chicks can be secured by natural methods of incubation. In some places nests out in the open proved unsatisfactory, as they were subject to floods caused by spring showers.

BROODING.

All ostrich chicks are raised artificially rather than by the ostrich hen. It is advisable to supply heat until the chick is about 1 week old, gradually reducing the amount of heat until, by the end of a week or ten days, depending on the weather, the source of heat is taken away. Chicks need close care and attention for some time. They should be fed the same kinds of grain, green feed, and grit that are supplied to the breeding stock, these feeds being adapted to the size of the birds.

Ostriches are called "chicks" until their first crop of feathers are removed, after which time they are known as young birds" until they are 1 year old, when they are called "plucking birds" or "feather birds."

PARASITES AND DISEASES.

When kept under good conditions and properly fed, ostriches are very free from diseases and parasites. A few breeders report constipation among both the young birds and the breeding stock. This is probably caused by improper feeding. The following remedy has been used successfully in treating this trouble: Mix together 8 ounces of Socotran aloes, 1 ounce of calomel, 4 drams of powdered capsicum, and 1 ounce of oil of juniper, and divide the mass into eight parts. Give two doses at an interval of a few days, each dose to contain one