NINETEENTH ANNUAL MEETING 25 



These hatch about the time that the buds are expanding 

 in the spring, and the little caterpillars make their web 

 right over the old nest. The caterpillar leaves the next 

 to feed, and immediately commences to increase as shown 

 on this diagram, and unless we take pains to clear them 

 out, w r e are apt to find some entirely grown caterpillars 

 by this time, and it is not long before they will have de- 

 foliated a large part of the limb. We have in this slide 

 simply a resume of the life history. The eggs up in that 

 corner, the adults here, which change into the pupae, and 

 then from that come the males and females. The females 

 lay the eggs in June, and that completes the life history. 

 A thorough spraying given in the spring as the foliage is 

 expanding controls this insect entirely. If perchance you 

 have not sprayed, and you find webs here and there on 

 your trees, we have found that a very good way is to take 

 an air or pressure syringe, or to go with a barrel apparatus 

 and spray them. On the larger trees or orchards it would 

 not be very practical. A good plan is to take a long ex- 

 tension rod, with the necessary attachments, and use pure 

 kerosene, spraying it right on to the nests so that it fas- 

 tens to them, and completely saturates the nest with kero- 

 sene. They will stay there for a day or so, but it will kill 

 out most of the worms. It is better to do it in the early 

 part of the day. By using care, you can kill them out 

 very effectively. I should prefer to make a regular spray 

 however. 



Another insect, the apple curculio, which has been 

 causing a little trouble, is shown on the screen. These 

 come out about the time the fruit is formed. Here we see 

 some of its work. The crescent mark which gives it its 

 name is the little pocket in which the eggs are laid. This 

 shows the effect of the egg punctures on the later fruit. 

 As you know this results even in full grown fruit. A 

 great many of these apples drop off. Those which are 

 punctured are also apt to drop, but the others remain on 



