Dr. Bryce, speaking of destroying the hour moth in Canada, 
says: “This can be done by closing the windows, doors, or other 
apertures of the building, and, night after night, until all evi¬ 
dences of moths have disappeared, burning sulphur by placing it in 
shallow pans, upon a number of heated stoves, say, small coal-oil 
stoves, in different parts of the building and putting a match 
to it.” 
The following method is also given by Dr. Bryce: 
“To prepare sulphur fumes: Place a metallic dish containing 
hot ashes on some support in a pan of water, or place in an old 
pan or other vessel a bed of ashes at least 6 inches deep, and 
about 15 inches in diameter, and place the sulphur and saltpetre 
in a slight depression in the centre and ignite. The proper pro¬ 
portions are 3 lbs. of sulphur and 3 oz. of saltpetre per 1,000 cubic 
feet of air space. All doors, windows, and other openings should 
be tightly closed before the sulphur and saltpetre are ignited.” 
There are certain necessary precautions to be carefully ob¬ 
served in burning sulphur in mills, which may be given briefly 
as follows: (1) Bemove all grain, flour, or other manufactured 
products from the mill; (2) see that all external openings are 
closed before the sulphur is ignited; (3) have the vessels con¬ 
taining sulphur so arranged and situated, that there will be no 
danger of fire from that source; and (4) thoroughly air and clean 
the mill again before resuming work. Particular attention should 
be given to the cleansing of the machines, especially those used 
for manufacturing flour and other farinaceous foods, as the sul¬ 
phur compounds will continue to act on the manufactured products 
some days after disinfection unless this caution is heeded. 
Steam .—Steam has been used in mills for the suppression of 
insect pests with considerable success. Miss Ormerod suggested 
the possibility of destroying the larvae of the Hour moth by turn¬ 
ing on steam from the boiler—a plan which had been entirely 
successful in clearing a cheese factory of maggots which had 
spread to every nook and corner. This method was tried by an 
English miller at Miss Ormerod’s suggestion, and he outlines his 
method of procedure as follows: “The way I applied the steam 
was by carrying about forty yards of half-inch piping into the 
mill from the boilers, and attaching an india-rubber hose to it 
for the men to work about on the walls, floors, spouts, and ma¬ 
chines, blowing the steam into all the crevices and holes. I stopped 
the mill for a week while this was being done. It has rusted all 
the shafting, etc., but this is quite a secondary matter as it can 
soon be cleaned again. After blowing the steam, which took two 
or three days, I set the men to work to wash the walls (and every 
other surface that they could without fear of affecting the flour) 
with paraffine [kerosene]. The inside of the machines I had 
washed with a strong solution of boiling water and soda." 
In Canada the Local Government compelled the miller, on whose 
premises the pest was first found, to take down all the machinery 
