EXPEKIMEXT STATIOX REPORT. 609 



to be damaged at all. A pear tree lias a tritle of the spongy look 

 to the bark, but not so bad as the prune. The large apple tree 

 does not show any effect that won Id indicate injury. We would 

 never advise its use on fruit trees, especially those belonging to 

 the rose family. Xeither would we think it entirely safe on nut 

 trees. 



On the whole, judging from observation and experiment, '"Tree 

 Tanglefoot" may be considered safe on all the ordinary shade and 

 forest trees when well out of the sapling stage, and that is more 

 especially tnie of rough or scaly-barked trees. On smooth-barked 

 trees the danger is greater until they are well grown. On apple 

 trees there seems to be little danger when the trees are well grown, 

 and the same is probably true on pear. On young fruit trees I 

 should be afraid of it, no matter what the variety. It is quite 

 possil)le that some of the younger apple trees treated by Mr. 

 Pfciifer may show bark injury on closer examination, and, if none 

 is caused now, it may develop in the course of another year if the 

 application is continued. 



As to the field for a sticky banding, that is a large one in cities 

 where the tussock moths are to be dealt with, and it may become 

 a very useful material if it becomes necessar}^ to fight the gypsy 

 or brown-tail moths in Xew Jersey. The results noted by Mr. 

 Pfeiffer on the apple trees will make necessary a closer observation 

 of the plant lice that feed on the tips to determine what natural 

 checks are operative and how these, in turn, are affected. 



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