APPENDIX F CLXXXIII 



graph from an optical standpoint and from the standpoint of rigidity, 

 giving the results of tests as to its efficiency in the latter respect. 



15. " Special Meeting." 



Professor E. E. Barnard, of the Yerkes Obser^•atory, one of the fore- 

 most astronomers of to-day, spoke of his work in eoiinection with the 

 recent appearance of the Morehouse comet, and showed very many views 

 of its development and evolution. Of no other comet is there such a 

 complete record of its life history as of this one, and its behaviour has 

 raised many questions of intense interest that await solution. 



16. " The Tides," by Dr. W. Bell Dawson, F.E.S.C. 



Dr. Dawson spoke on the measurement of the tide by means of the 

 tide gauge, and showed the several causes which produced the tides of 

 different character. He then outlined the work of the tidal survey and 

 the methods of making tide tables for any gtiven place. Apparatus and 

 numerous diagrams were shown. 



17. "Personality in Micrometer Work," by E. M. Stewart, M.A. 

 Mr. Stewart described the systematic errors depending on the 



observer which enter into micrometer measures of star positions, and 

 showed how they also depend on star magnitudes. He showed also the 

 methods of eliminating or correcting for these errors, and the values 

 obtained in transit work at the Dominion Observatory, and the correc- 

 tions applicable to observed clock errors. 



YITI. — From the Entomological Society of Ontario, through Mr. 

 Arthur Gibson, Delegate. 



I have the honour to report that the Entomological Society of 

 Ontario has had a most successful year during 1908. It was with very 

 great regret, however, that we liad to record the death of our beloved 

 friend and President, Dr. James Fletcher, which occurred at the Eoyal 

 Victoria Hospital, on Sunday morning, November 8th, 1908. 



The forty-fifth annual meeting of the Society was held at liie 

 Ontario Agricultural College, Guelph, on Thursday and Friday, 

 November 5th and 6th last. An interesting discussion took place at 

 the first session on the chief insect pests of the season. The annual 

 report of the Society which recently appeared contains a full account of 

 the proceedings, with the papers presented at the meeting published in 

 full. This is a report of 152 pages and is one of the most valuable ever 

 published by the Society. Among the papers which it contains the 

 following may be mentioned : 



" The Interprétation of Nature," by E. P. Felt, Albany, N.Y. 



"The Economic Importance and food habits of American Gall 

 Midges," by E. P. Felt, Albany, N. Y. 



