Floors are commonly constructed of earth, boards or cement.  Cement floors are perfectly sanitary and easy to keep clean.  The objections to their common use is the first cost of good cement floors.  Cheaply constructed floors will not last.  Board floors are very common and are preferred by many poultrymen, but if close to the ground they harbor rats, while if open underneath they make the house cold.  Covering wet ground by a board floor does not remedy the fault of dampness nearly so effectually as would a similar expenditure spent in raising the floor and surrounding ground by grading.  All things considered, the dirt floor is the most suitable.  This should be made by filling in above the outside ground-level.  The drainage will be facilitated if the first layer of this floor be of cinders, small rocks or other coarse material.  Above this layer should be placed a layer of clay, wet and packed hard, so the hens cannot scratch it up, or a different plan may be used and the floor constructed of a sandy or loamy soil of which the top layer can be renewed each year.

The walls of a chicken-house must first of all be wind-tight.  This may be attained in several ways.  Upright boards with cracks battened is the cheapest method.  Various kinds of lap-siding give similar results.  The single-board wall may be greatly improved by lining with building-paper.  This should be put on between the studding and siding.  Lath should also be used to prevent the paper bagging out from the wall.  The double-board wall is the best where a warm house is desired.

It should be made by siding up outside the studding with cheap lumber.  On this is placed a layer of roofing paper and over it the ordinary siding.  The windows of a chicken-house should furnish sufficient light that the hens may find grain in the litter on cloudy days.  Too much glass in a poultry house makes the house cold at night, and it is a needless expenditure.

The subject of roofing farm buildings may be summarized in this advice:  Use patent roofing if you know of a variety that will last; if not, use shingles.  Shingle roofs require a steeper pitch than do roofs of prepared roofing.  A shingle roof can be made much warmer by using tightly laid sheathing covered with building-paper.  Especial care should be taken that the joints at the eaves of the house are tightly fitted.

The object of ventilating a chicken-house is to supply a reasonable amount of fresh air, and, equally important, to keep the house dry.  Ventilation should not be by cracks or open cupolas.  Direct drafts of air are injurious, and ventilation by such means is always the greatest when the least needed.

Schemes of ventilation by a system of pipes are expensive and unnecessary.  The latest, best and cheapest plan for providing ventilation is the curtain front house for the north, and the open front house for the more southerly sections.  The curtain front house is giving way to the open front with a somewhat smaller opening in sections, as far north as Connecticut.