46 
them; in fact, they cannot locate in them, for they are perfectly 
round and smooth in3ide. 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 larvae of 
the flour moth cause most trouble in spouts and elevator legs 
ha3 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 in constant use. It has been success¬ 
ful in France, and one of my California correspondents who is 
using the brushes says: “Our 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 w T orms in our mill; in 
fact, 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 musty 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 brush take a 
piece of lj-inch 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 J or § of an 
inch. The bristles on the sides C, 
C, should be J 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 
size to fit his elevators.” 
I will now consider, in the order of their effectiveness, sub¬ 
stances which have been used with the most satisfactory results 
in combating the flour moth. Bisulphide of carbon stands first, 
followed by steam, sulphur, and steam and sulphur combined. 
