REPORT OF THE STATE ENTOMOLOGIST 1902 179 



PLATE 4 



Tree 4 was sprayed with the lime, salt and sulfur mixture in 

 the spring of 1902 with no indication of injury to the bloom. 



Tree 113 was treated in April 1900 with a mixture of whale 

 oil soap and crude petroleum and the two following springs with 

 a 20$ mechanical crude petroleum emulsion. There is no sign of 

 injury, and the profuse bloom shows that the buds were not 

 harmed. 



PLATE 5 



Trees 41 and 47 have been sprayed three springs in succession 

 with a 20$ mechanical crude petroleum emulsion, except that in 

 the case of the former a 25 $ emulsion was applied in 1901. Little 

 or no injury has resulted, and the somewhat abundant bloom 

 shows that the buds were not affected to any extent. 



PLATE 6 



1 Work of willow and poplar curculio, Cryptorhynchus 

 1 a p a t h i Linn. 



2 Nun moth, Psilura monacha Linn; slightly enlarged. 



3 Birch leaf Bucculatrix, Bucculatrix canadensi- 

 sella Ohamb., a, skeletonized leaf; b, molting cocoon; c, larva; 

 d, head of larva; e, anal segments of larva; f, same of pupa; g y 

 cocoon with extruded pupal skin ; h, moth — all enlarged. (From 

 Insect Life) 



