THE CANADIAN ENTOMOLOGIST. 42!» 



districts during the past season. Mr. Gibson, who represents Ottawa, 

 described the unfavourable character of the season for many insects, but 

 reported Grasshoppers and Aphids as extremely numerous. He also 

 referred to the destruction of a number of cut-leaf birch trees by the Red- 

 necked Borer. Mr. Williams and Mr. Nash gave reports on the Toronto 

 district, and referred to the unsatisfactory nature of the work thai is being 

 carried on in order to control the Tussock Moth on the shade trees of the 

 city of Toronto. Mr. L. Csesar gave a paper on "Some Insects of 

 Economic Importance," referring to the extension of the San Jose" Scale to 

 the county of Prince Edward, the work of a Blackberry Saw-fly, Spruce 

 Gall-louse and a variety of other insects. The papers were discussed in 

 an interesting manner by a number of those present. Mr. Lyman read a 

 paper on "The Origin and Diffusion of Entomological Errors," confining 

 himself to the Lepidoptera. He stated that coloured plates were a fre- 

 quent source of error, and that occasionally collectors sent their specimens 

 to experts to be named, retaining what they supposed to be duplicates. 

 These were often different species, and it sometimes also happens that the 

 numbers used for identification were transposed, either by the sender or 

 the recipient. The third class of errors was due to typographical mistakes, 

 a number of instances of which he mentioned. Mr. Gibson spoke of the 

 importation of the Brown-tail Moth on French nursery stock in Ontario 

 during the last winter. As soon as their presence became known a 

 thorough examination was made. Over a million plants were inspected, 

 and 1 86 nests containing living caterpillars were found. These and the 

 packages which contained them were burned, and since then no examples 

 have been found. 



In the evening a public meeting was held in Massey Hall Auditorium, 

 which was well filled with students, both male and female, and a number 

 of visitors from the town, as well as members of the Society. Dr. C. 

 Gordon Hewitt, the newly-appointed Entomologist at the Experimental 

 Farms of the Dominion, gave a highly interesting and instructive address, 

 illustrated by a series of admirable lantern pictures, on "House Flies and 

 Their Allies." The College orchestra added much to the enjoyment of 

 the evening by the musical selections they rendered. A very hearty vote 

 of thanks to Dr. Hewitt was moved by President Creelman, and a general 

 feeling of pleasure was expressed that so talented an entomologist had 

 been selected to fill the place of the late lamented Dr. Fletcher. 



During the second day, Friday, November 5th, meetings were held 

 during the morning and afternoon in the Entomological Lecture-room, and 



