m 



them; in fact, they cannot locate in them, for they are perfectly 

 round and smooth inside. It is in the corners of a wooden spout 

 that the worms locate and spin their webs. It would be a hard 

 matter for me to find a sample of stock in this mill, at present, 

 that contains either the worms or moths." 



Attachment of Brushes to Belts. — The fact that the larvse of 

 the flour moth cause most trouble in spouts and elevator legs 

 has suggested the attachment of several brushes to the belts, so 

 arranged that they constantly clean the sides and corners of the 

 spouts and the elevator legs. Where it is necessary to retain the 

 wooden spouts in an infested mill, this device is highly recom- 

 mended and should be kept iu constant use. It has been success- 

 ful in France, and one of my California correspondents who is 

 using the brushes says: "Oar spouts were continually choking up, 

 so that we had to employ one or two extra men in operating 

 the mill in order to take care of the choke- ups that occurred. Now 

 we have no difficulty whatever. The elevators and spouts are en- 

 tirely clean, and we have no trouble with worms in our mill; in 

 iact, we hardly notice the existence of the pest at all, but we 

 realize that we must keep up a constant warfare on them or they 

 will immediately increase to such an extent that we shall be 

 in as great trouble as before." 



The "American Miller" for December, 1895, contains a com- 

 munication from a practical miller bearing directly upon this 

 subject, and I quote it here in full: 



"Editor American Miller: Millers are often troubled with ele- 

 vators sweating and dust settling in them, which becomes musty 

 and moldy. More or less of this is bolted into flour, and as a 

 result masty flour comes back to the mill. I have designed an 

 elevator brush to prevent this trouble, a drawing of which is pre- 

 ■sented in the accompanying illustration. [See Fig. 7.] 



</ 



'To make the 

 piece of l^-inch 



brush take a 

 plank of the 

 same dimensions as the elevator 

 cups, and fasten bristles to three 

 sides. The side A is fastened 

 to the elevator belt with flat- 

 headed bolts running through 

 the plank, as shown at B, B, 

 the bolts being ^ or § of an 

 inch. The bristles on the sides C, 

 C, should be | of an inch long, but 

 those at D should be longer, so 

 that they will give a good brush- 

 ing to the outer side of the ele- 

 vator. The brush is easily made, 

 and the miller can make it of any 



Fig. 7.-El.vator Brush. size to fit his elcvatorS." 



I will now consider, in the order of their effectiveness, sub- 

 stances whicti have been used with the most satisfactory results 

 (in combating the flour moth. Bisulphide of carbon stands first, 

 iollowed by steam, sulphur, and steam and sulphur combined. 



