150 



REPORT — 1886. 

 Eesistance of Coil, 3E 103. 



Mean value . 

 Temperature coeflBcient 



9-989714 at 12-88° 

 -00312. 



This is represented by the second line (drawn black on the diagram) 

 103, Plate II. 



This difference between the temperature coeflBcients has been checked 

 by determining the difference between the coils at different temperatures 

 directly, and the results of the comparison are quite satisfactory. 



The proportional errors of the individual observations ai'e somewhat 

 larger in this case than they were for the single ohms, amounting in one 

 or two cases to -0006, or 6 in 100,000, but the accordance is perhaps as 

 good as can be expected. The point of interest lies in the fact that 

 the temperature coefficients of the two coils differ so considei'ably as 

 •00289 and -00312 per 1° C. although made at the same time from the same 

 wire. 



Similar observations have been made on the coils of 100, 1000, and 

 10,000 ohms, but their number is not yet sufficient for the construction 

 of the curve of variation with temperature. These we hope to lay before 

 the Association on some future occasion. 



Second Report of the Committee, consisting of Professors A. Johnson 

 (Secretary), J, Gr. MacGregor, J. B. Cherriman, and H. T. Bovey 

 and Mr. C. Carpjiael, appointed for the purpose of promoting 

 Tidal Observations in Canada. 



The reply, last year, of the then Minister of Marine to the memorial 

 presented to him by your Committee is contained in the Keport of the 

 Association. This year the Committee have again been urging on the 

 attention of the Canadian Government the importance, looking especially 

 to the needs of navigators, of systematic tidal observations at stations 

 properly selected. 



In last January a deputation of fifteen or sixteen — consisting of repre- 

 sentatives of your Committee, of members of the Council of the Royal 

 Society of Canada, and of representatives of the Board of Trade of 

 Montreal, accompanied by Sir William Dawson as President-elect of the 

 Association — waited on the new Minister of Marine (Hon. G. E. Foster), 

 and subsequently on the same day had an interview with the Premier 



