APPENDIX B 



LXXXI 



Absolute observations for checking the value of the photo- 

 graphic base line are made twice a week, and absolute observations 

 for Inclination are made once a weeek. Elliott Magnetometer No. 

 48 is used for Declination work and Dover Dip No. 200 for Inclin- 

 nation. The index corrections for these instruments on International 

 Standard were determined by comparison with Magnetometer No. 

 15, and Earth Inductor No. 89, whose differences from standard 

 were determined in Washington in 1915, and all published results 

 are reduced to the International Standard. 



Agricultural Meteorology 

 The work of this branch was carried on throughout the 

 year along the lines described in the last Report, but owing to the 

 illness and subsequent resignation of Mr. Mills, who had been placed 

 in charge of the work, progress towards definite conclusions has 

 been small. The branch will during the coming year be carried on 

 by Mr. A. J. Connor, M.A., assisted by Mr. Eric G. MacDougall, 

 M.A., B.Sc. F., a returned soldier, and it is hoped that valuable work 

 will be accomplished. 



Time Service 



Time continues to be given to the greater part of the Dominion 

 by this Service, through the observing stations at Victoria, B.C., 

 Toronto, Montreal, Quebec, and St. John, N.B. Time balls are 

 dropped at each of these places except at Toronto where the signal 

 is given by the fire alarm bells, and at Vancouver, where a gun is 

 fired by electrical current from the office of the Meteorological ob- 

 server. At Halifax the time ball is dropped automatically by an 

 electric current, transmitted by contact in the mean time clock in 

 the St. John Observatory. The railways and telegraph companies 

 obtain their time from these same sources. 



