_Buying Stock._--The advantages of buying and maintaining definite breeds of poultry are now so well understood that the mixed or mongrel flock is fast disappearing. Having decided which type of fowl is best adapted to one's market and ideas, there is no difficulty in finding a breed that will fit the need. As has been pointed out, the attributes of high egg production or fine quality of meat are inherent in certain breeds. A single breed means uniformity in color, size and shape of the eggs which increases their marketability. More attractive appearance of the flock and greater efficiency from feeding without additional cost are other advantages pertaining to standardizing the flock as to breed. Stock may be acquired as day-old chicks, as ten- to twelve-week-old pullets or as adult birds ready to lay. Hatching eggs may also be bought if desired, but it will be found more satisfactory and just as economical for the inexperienced person to buy the hatched chick or the more mature birds. The hatching and brooding processes are fraught with difficulties which may be especially acute for the amateur. The greatest demand at the present time, and properly so, is for day-old chicks. A highly specialized industry has been developed for the purpose of supplying this demand and a reputation for reliability has been established by many concerns catering to this trade. _Poultry House Construction._--Where flocks of poultry are to be kept for egg production, special laying houses must be provided in addition to brooder houses that will be needed in any case. One of the best types of brooder house is the two-room type developed by Cornell University, Ithaca, New York. Such a house should be about 8 by 14 feet, and mounted on skids for convenience in moving. A movable partition divides the house into two rooms. Thus a cold room is provided for exercising and a warm room for sleeping. The marked difference in temperature between the two rooms helps to harden the chicks, while the reduced space about the hover conserves the heat. A great deal of study has been given to the construction of laying houses for poultry. The purposes in mind have been to obtain maximum sunlight throughout the day, protection from storms and from dampness, and adequate ventilation. In the construction of a modern laying house, 1 square foot of glass should be provided for every 20 square feet of floor space. The windows should be hinged so that they may be opened in warm weather. One of the commercial glass substitutes that are now on the market may be used instead of ordinary glass to allow violet light rays to reach the birds. The other openings permit free circulation of air through the house. They should be equipped with muslin curtains to be used during storms and in extremely cold weather. Such a house can be used the year round. [Illustration: (_Courtesy of Poultry Tribune_)