Hatching by Incubator.

This is a necessity where large numbers are kept. American-made incubators, of improved mechanism, are sold now at a moderate price that will hatch eggs that are a fortnight old. Only new-laid eggs would hatch in the old incubators, owing to the difficulty of keeping up an even temperature. Full directions arc given with each machine.

Incubators may be used to hatch eggs to add to the clutches of sitting-hens, or to hatch for bringing up by an artificial mother or brooder. These brooders, with full directions for use, are sold by the incubator makers.