ECONOMIC VALUE OF FUMIGATION 235 
can handle the small ones nicely. In fact, three men 
could manage ten large tents in one hour. From 
every appearance now the scale seems to be thoroughly 
killed and the trees to be doing well.”’ 
Certificate of fumigation.—Professor Lochhead says : 
‘‘In Ontario there is one particular in which we differ 
from most of the states to the south of us, and 
that is in allowing the proprietor of every nursery 
to attach his own certificate of fumigation. Per- 
sonally, I think this is neither fair to the nurserymen 
nor to the public, but the Department of Agriculture 
here in Ontario has never seen fit to appoint official 
fumigators to take charge of the fumigation at every 
nursery. ‘The department allows the nurseryman to 
do his own fumigating and to attach a certificate of 
fumigation to every package sent out. ‘The inspector, 
of course, and his assistants are moving about during 
fumigation time, and the nurseryman does not know 
when to expect a visit. Of course, we look after those 
nurseryman who live in infested regions. All the 
nurseries in the scale-infested regions are examined for 
scale, so that there is a double check on all stock sent 
out.”’ 
Nurserymen willing to fumigate.—‘‘I find that 
there is quite a change of opinion regarding the merits 
of fumigation within the past year. I can say now, 
without hesitation, that nearly every nurseryman is 
perfectly willing to fumigate his stock according to 
directions, and to do it carefully. He feels that his 
reputation and his business are at stake should scale be 
found on his stock. We examine every fumigation 
