一、烟箱用木板做一匣子,分为上下兩層。上層的前面用玻璃作壁,以便从外面看见箱里的光綫,并須做成可以移动的;在左侧板的中央开一直徑5厘米的圆洞,在右侧的中央开一長方形的洞,洞外裝一大小相同的門,須向外开,門上可以裝卸玻璃。下層只須在前面做一抽板,并在兩侧鑽上許多小孔以便空气流通。上層与下層的中間隔板須鑽許多小孔或鋸三条狹縫。匣 First, the smoke box with a box made of wood, divided into two layers. The front of the upper floor is made of glass so that the light inside the box can be seen from the outside and made to be movable. A 5 cm diameter circular hole is formed in the center of the left side plate and a rectangular Hole, hole outside the same size of the door, to be open to the outside, the glass can be handled on the door. The lower deck just has to be a suction plate in the front and many holes drilled in both sides for air circulation. The upper and lower intermediate partitions must be drilled with many small holes or sawed three slits. box