31 



posit its eggs at the summit of the mound, where the newly 

 hatched larva will usually be unable to bore through the hard- 

 ened bark. 



The most approved method consists in either tying tightly 

 about the tree a broad piece of tar or other building paper, or 

 coating the tree trunk with a mixture which shall either 

 poison the larva or prevent its boring in. These should be 

 applied before the earth is turned back, and should extend at 

 least two inches below the surface of the soil and two feet 

 above it. If the building paper is used it may be removed 

 during the winter. Where other things are lacking straw, 

 newspapers or old cloths bound tightly about the trunk will 

 answer the purpose. Ordinary whitewash is cheap and easily 

 prepared, and will serve the purpose admirably. To it should 

 be added a small proportion of Paris green and some soft soap 

 or cheap glue to prevent bracking or crumbling. This will 

 have to be renewed if it should break up or fall off before the 

 summer is through. Prof. Smith recommends white lead paint 

 in boiled linseed oil as being serviceable on old trees, but adds 

 that it should not be used on young trees, nor should turpen- 

 tine be used to thin out the lead in any case. Extreme cau- 

 tion should always attend the use of white lead, and the fact 

 that only old trees will stand it should be emphasized. An or- 

 chardist near Montgomery attempted its use on young trees. 

 I am told that the orchard was completely ruined. 



Experiments at Aubuen. 



The peach tree borer is abundant in the vicinity of Au- 

 burn, so that a variety of experiments in connection with it 

 have been possible. These have been carried out under the 

 direction of Prof. Earle, who has kindly furnished the data for 

 the following notes. Attention will be here called to two of 

 these which have yielded important results. 



On April 7, 1896, an orchard was gone over thoroughly 

 and carefully " wormed " with the knife, some trees yielding as 

 many as five and six worms each. A short time before this 



