88 



and a tongue and grooved floor was laid over this and 

 at right angles to the boards of the first floor. Care 

 was taken to join the floor carefully to the outer walls 

 so as to keep out rodents or air. Two by four inch 

 scantlings were set vertically two feet apart around 

 the walls and a layer of paper tacked upon these. 

 This provided a four inch dead air space between the 

 two by fours from floor to ceiling, thus giving excellent 

 protection from sudden changes of temperature. 



The walls were then ceiled with the same material as 

 that used for the floor. The rough board ceiling was 

 simply covered with building paper during the first 

 season, but was also ceiled at the beginning of the sec- 

 ond year. The effect of this change is clearly shown 

 by the much more constant temperatures maintained 

 the second year. 



The windows on the north and east sides of the 

 house were replaced by hinged doors, composed of 

 two layers of matched boards with building paper be- 

 between, so as to provide ventilation during the curing 

 period. The door at the south-cast corner of the house 

 was remodeled by covering with paper and an extra 

 layer of boards. 



An eight by ten inch ventilator opening was cut in 

 the floor at each of the four corners of the room as a 

 part of the ventilating system. These openings could 

 be closed at will by means of sliding covers. A flue, 

 made by nailing four six inch boards together, extend- 

 ed through the ceiling in the center of the room and 

 out through the roof. The top of this flue was roofed 

 to keep out rain and the ceiling opening could be closed 

 at will by a sliding board. 



BUILDING THE BINS 



The bins (see fig. 4) were constructed as follows: 

 Two by fours were used for the uprights, or posts, 

 which were toenailed to the floor and ceiling. One 

 inch bj'^ three inch strips were nailed to the corner posts 

 for the sides and backs, leaving a one inch space be- 

 tween the strips. The backs of the bins were made llrst 

 and then set in place, since there is not room in the 

 narrow space to work. Edging strips, (which may be 

 had at the saw mill at a cost not exceeding fifty cents 

 for a two-horse wagon load) were used for construct- 

 ing the bins and were entirely satisfactory. The false 

 bottoms were made by nailing stout edging strips on 



