"In the construction of buildings," continues this experienced poultryman, "sufficient housing should be provided to prevent overcrowding and the difficulties that come in the train of that condition. About three square feet of floor space per bird is required for the lighter breeds such as Leghorns, and four to five square feet per bird for the heavier breeds. For the one-man plant, the recommendation is for a maximum of about 1,500 birds. This would require from 4,500 to 5,250 square feet of floor space suitably arranged for the lighter breeds of the Leghorn type. For the young stock to be used as replacements, seven to ten brooder houses, 10 by 12 feet in size, would be required and about the same number of range shelters, usually 6 by 8 feet, for the purpose of sheltering growing young stock from hot sun and heavy rains when they are out on range." _Probable Net Income._--Many persons who have started in the poultry business have been misled as to the amount of net income they will be likely to receive from a one-man plant. It is pretty well established that in normal times a net income of from $1,500 to $2,500 annually can be secured from a plant housing 1,500 birds. A great deal depends, of course, upon the skill of the operator, and a plant of this size requires the full time of one competent person. It should be borne in mind that this net income is in addition to the residence and such food as would be taken in the form of poultry products and from the garden. _Sales Management._--Every prospective poultry keeper should determine the marketing possibilities for the product in the area under consideration before he makes a choice of location. There are at least four methods of marketing eggs and poultry meat, any one of which can be used exclusively or two or more used in combination as a means of disposing of the product to the best advantage. The system that he will adopt will depend largely upon his location, as well as upon his individual preference, and upon the facilities that are available in the area where he operates. In many sections of the country there are cooperative egg marketing associations where the eggs are received in bulk from the producers, are graded and marketed in large quantities, the producer receiving the full selling value less, of course, the costs of operating the distributing agency. In the northeastern states, egg auctions have been very successfully developed. Under this system the individual producer brings his eggs to the auction market where they are graded and sold on the basis of weight, size and other factors pertaining to quality. In this method of selling the producer receives a definite price for his eggs less a small charge per case made by the selling agency.