
Plate IX.—Showing how funnel and vane may be mounted. A, funnel; B, shaft 
of funnel; C, C, C, 1-inch gas pipe; D, D, 1%-inch gas pipe; HE, cap for support 
of 1-inch gas pipe; F, G, H and M M and N N are stays of band iron bolted 
together and to the sides of the shaft to support the axis of the funnel; J, 
weather collar to turn rain out of shaft; K, L, band-iron to stiffen vane and 
attach it to funnel. (From Wis. Agr. Exp. Sta. Bul. 70.) 
