144 NEW HAMPSHIRE COLLEGE 



This indicates that the pest is again on the increase there, so 

 that it will be well to protect the noble elms which add so much 

 to the charm of this beautiful village. 



The small crop of apples, as was to be expected, was seri- 

 ously damaged by the Apple Worms — the young of the Cod- 

 ling Moth. It is in place here to mention the recent observa- 

 tions of several entomologists — notably Messrs. Washburn of 

 Oregon, Slingerland of New York, and Card of Nebraska — 

 showing that the eggs of this insect are frequently laid upon 

 the leaves of apple trees, instead of wholly upon the fruit as 

 heretofore supposed. From an economic point of view this 

 renders more evident the advantage of spraying with Paris 

 green or London purple, so commonly practised by commercial 

 orchardists. 



Our observations in many parts of the state, as well as 

 reports from correspondents, show that the Oyster-shell 

 Bark-louse continues to do serious damage in young apple 

 orchards. Its depredations are the more to be feared because 

 the presence of the pest is so frequently overlooked. The 

 scales are the color of the bark, to which they closely adhere 

 so that unless attention is called to them, thev are likely to 

 escape notice imtil they become excessively numerous. Young 

 orchards should be frequently examined ; if on the bark of the 

 trunk, branches, or twigs, brown scales the shape of miniature 

 oyster shells are seen, you may be pretty sure that the trees are 

 infested with the oyster-shell bark-louse. 



If one of these scales be removed and its lower surface looked 

 at through a lens, a number of small, whitish, oval eggs will be 

 found. These hatch early in summer into tiny insects that 

 wander over the bark and foliage for a few days. They may 

 be seen in June as microscopic whitish specks upon the trees. 

 When thus newly hatched they are easily destroyed by spray- 

 ing the trees with dilute kerosene emulsion. 



I have seen no indication as yet that the dreaded San Jose 

 Scale, which is causing so much consternation among fruit 

 growers to the south and west of us, has obtained a foothold in 

 New Hampshire. There are reasons for hoping that this pest 

 will not thrive so far north as we are, but it seems advisable 

 that those who plant young trees or shrubs from nurseries out- 



