THE APPLE MOTH. 133 



cocoon. An old flour barrel will be used freely. The openings between the hoops 

 and staves; the cracks between the staves that do not fit close; little pieces of split 

 sticks tied together as faggots ; two pieces of boards placed together and laid on the 

 ground, or stood up endwise under or near the trees, will all attract them, especially 

 if those trees are so young as not yet to have rough, scaly bark. 



Some caterpillars are very particular as to where they attach their cocoons, but 

 this one seems to have little choice. Wormy fruit carried into the house will prove 

 this; the escaping caterpillars will find places to suit them in your furniture, your 

 books, old papers, your clothing. I try so many experiments during the summer 

 in my insect investigations, that I forget some of them. I have filled my pockets to 

 repletion with the wind-falls of the little early pears, such as Doyenne d'ete, Made- 

 leine, etc. This coat has sometimes been hung up in a wardrobe, and the pears for- 

 , gotten until they were too soft, and the worms have escaped. There will be slight 

 obstructions in putting that coat on the next time. The sleeves will be found tied 

 in places with little cocoons ; pockets contracted. Where it hung in folds, will be 

 little spots of flossy silk ; and when these various cocoons are broken up, as they will 

 be when it is put on, that coat will be found in a very wormy condition ; and then 

 if the hands are thrust into the pockets before remembering the summer pears 

 what a muss ! 



But in large orchards of older Pear and Apple trees, the rough bark seems the 

 chief resort of this little insect. The layers or scales become the homes of nearly all. 

 By placing these worms on such trees, as I have often done, and watching their habits, 

 the instinct or reason, or whatever it may be called, becomes a matter of interest. 

 How often they will peep into small crevices, and then out again! Sometimes they 

 will creep in and come out at the opposite side, soon satisfied that they will not suit ; 

 sometimes remaining many minutes, and then looking further. When the proper" 

 place is at length found, little cavities will be dug out in the adjoining layers (Plate 

 10, Figure i), and a firm border of silk will be made, inclosing these two cavities, and 

 tying the scale to the true bark, and this often preventing those scales from falling off", 

 as they would be likely to do by the warping liable to be occasioned by sudden 

 changes of weather. 



Aug. 20. Many of the first crop of the larva? of the Apple Moth are now 

 matured become Moths. That question is settled ; there are two generations of this 

 destructive pest in the same year. The Moths of the early summer are not those of 

 this generation ; these live but a few days. The twenty-one larvse I took from under 

 a leather round a Bartlett Pear tree some days ago, and which I placed in a large 

 paper box, have all formed strongly-made cocoons. Three small pieces of the staves 



