Show hole in roof Is poor henhouse ventilator cutting a hole in the roof la a poor way to ventilate the poultry bi building diding because wallows it allows him to escape making the house cold anys prof rot A Q 1 smith chief of of the poultry division at university farm st paul cunning stunning a shaft through tho roof to near the hoof door la is atso also d j triet method tidd because much of the moisture will escape the tho shaft and near aca the rhe top of the room where the air li Is warmest the easiest and simplest method of keeping thet the poultry bie with refe reference renge to temperature bools I 1 turo ture and ventilation art smith says Is to have it equipped with windows just ilice those used in dwellings and then use the tha upper sash for ventilating luring during extremely cold weather the sash may be dropped tiny any als als tance required by the conditions of di wind and weather but it should never be completely closed even on the coldest night there Is a no automatic system of ventilation that will give complete satisfaction mr smith says bays any system used will require adjustment and sometimes tills this will have to be given several times a day |