EXPERIMENT STATION BULLETINS. 



249 



'soft-maple trees, and others are very sickly, while on the other hand, other trees growing 

 apparently under the same conditions, except for the presence of the scale, are vigorous. 



Currant bushes suffered severely, but after treatment have recovered quite well. Two 

 large mountain ash trees show the effects of the scale by a very sickly appearance. 



The worst case on record in ■Michigan was that of an old orchard, visited by Mr. 

 Trine, State Inspector of Orchards and Nurseries, on information obtained from this 

 office, ihis orchard lias not been seen by the writer up to this time, but Mr. Trine 

 reports 77 trees as infested and 55 of them dead or nearly so, nothing but sprouts are 

 left. The remaining 22 trees are more or less affected. In this lot the Damsons were 

 least affected, seeming to stand the scale very well. There were a few cherry trees 

 affected, but not seriously. Curiously enough the damage in the case just cited did 

 not appear until the present season, and in estimating the damage caused by the scale 

 we must deduct that done by the extremely severe winter immediately preceding the 

 killing of the trees. It is almost certain that neither the scale nor the cold weather 

 alone would have killed the trees, but together they made a very bad combination. 



Very little if any injury was noticed before the past season, which shows that the 

 scale had not become bad enough to kill of itself alone. 



In the case of an orchard visited by the writer, about twenty plum trees were affected 

 ^i\ the scale, the trees were mostly Lombards, with two Burbanks and one unknowTi 

 variety. One tree died, to all appearances, from the scale, and foiir were taken out 

 because thev Avere about to die. 



Fig. 3. lvuii|ii-a.ii !• riiit-sfale, Aaptit mt its usi rfdjuriitis, on liiiiDs of iilum-tree. (Original.) 



3J 



