71 
and wo can say without any hesitancy whatever that the fanner who 
uses these trap huiterns or tries to experiment with thenj is simply 
wasting his time and money, as the method has })een thorou^-hly })i-o\en 
inefiective. 
It is also the practice to some extent to put cans or l)ottle> contain- 
ino- molasses, cider, vinegar, or some other substance of similar nature 
in the oi-chard. and upon tinding that insects are attracted by these 
compoimds and killed, many fruit growers think this is a good remedy 
for the codling moth. The results of many careful expi'riments show 
that only incidental captures of the codling moth are made. With both 
these last two practices — that is, trap lanterns and baiting the moths — 
the greatest trouble has been that the fruit growers are not accjuainted 
with the codling moth in its early stages. Any fruit grower can breed 
moths for himself, and l)y comparing his catch can very easily satisfy 
himself. 
Many times fruit growers have tried spra3'ing their orchards with 
ill-smelling compounds with but little success. These compounds are 
always more or less expensive and have never been so efficient as to 
justify their use. 
Other fruit growers think that spraying the orchard with water 
fre([uently will give relief from the attacks of the codling moth. 
Undoubtedly if the trees were kept in a spray all the time, the fruit 
would be clear of the insect; ))ut if this were done, the probabilities 
are that no fruit would set, and if any should set it would not ripen 
well, and the trees themselves would probabh^ die. The expense of 
this operation would l)e many times greater than that of spraving. 
It has l)een stated that electric lights repel the moth and that trees 
near electric lights in cities are often free from its v,ork. The writer 
had an excellent opportunity to investigate this point, and found that 
an apple tree about 40 feet from an electric light was as badly infested 
as any other in that vicinity. 
In order to do away with the lai)or entailed by using bands around 
the trees many kinds of traps have ])een invented. Hiley. l)y careful 
expei'iments, showed that one of these tra])s would not catch as many 
larvie as the bands; and other experiments have shown that these 
patent traps are never very efficient. 
It was claimed for some time that the llowers of i)lants of the genus 
Phy.sidiit/dis might })e efficient against this insect, since in order to 
reach the honey of the flower the proboscis would have to be passed 
through a narrow cleft, from which it could not be withdrawn, and 
the moth would therid'ore ))e held a i)risoner until it tlitnl. It wa> 
proposed to train the vines around the trunks and l)ranches of the 
trees, and, the moths IxMug captured, the orchard would be protected. 
C onclusiv(^ evidenci^ has been riH-ordiHl which >hows that those tlowors 
ha\i' no attraction for the codliiiLi- moth. 
