INJURIOUS INSECTS OF 1904. 119 



The case has assumed such a serious aspect that this Depart- 

 ment has notified all nurserymen who apply for State Certificates 

 that hereafter no certificate will be granted to any nursery upon whose 

 trees this beetle is found. 



In addition to the works mentioned above, interesting accounts of 

 this beetle can be found in "Loudon's Arboretum et Fructicetum," 

 Vol. Ill, 1838; in Selby's "Forest Trees," 1842; in "Zeitschrift fur 

 das Forst und Jagd-wesen," Vol. XXIII, 1891 ; in Westwood's "In- 

 troduction to Classification of Insects," Vol. i ; in "Lehrbuch der 

 Mitteleuropaischen Forstinsekten Kunde," Vol. i, by Judeith & 

 Nitsche, 1895; in "Entomologica Americana," Vol. Ill, p. 123, 1897; 

 in "Forest Protection," by W. R. Fisher; in "Forst-Zoologie," by 

 Altum, Vol. Ill, Insekten, pt. i ; in Henschel's "Die Schadlichen- 

 furst und Obstbaum Insekten ;" in Journal of Columbus Horticultur- 

 al Society, Vol. XVI ; in 32nd Annual Report, Entomological So- 

 ciety of Ontario, 1902; in Bulletin No. 46, Bureau of Forestry, 

 U. S. Dept. of Agriculture, 1904, entitled "The Basket Willow," and 

 elsewhere. Many of the writers on this insect mention a habit it 

 has of emitting a squeaking noise when handled or annoyed, evi- 

 dently made by rubbing parts of the thorax together. 



NURSERY INSPECTION. 



The nurseries of the state which have applied for inspection have 

 been found free from dangerous insects and contagious plant dis- 

 eases, and, as a rule, appear to be in excellent condition in every 

 respect. The nurserymen have, without exception, shown every 

 disposition to assist the Entomologist in his work, and have been 

 uniformly kind and courteous. 



Since the discovery of the imported Mottled Willow and Poplar 

 Borer, notice has been sent all nurserymen that hereafter no certifi- 

 cate will be granted if this dangerous pest is found in their stock. 



Appended is a list showing the source of money ($130.18) obtained 

 from inspection in accordance with the law, and also the fact that the 

 same has been handed to the State Treasurer to be added to the 

 fund for combating injurious insects in Minnesota. 



