THE HAMILTON ASSOCIATION. 93 
sions, correlating a row of facts here with another there, com- 
paring or contracting what the French, Russian, Italian or other 
directors do with what is recorded in Canada or in India. 
Sometimes these patient observers venture on deductions them- 
selves, but their work is available for others, and herein is a 
field for those who choose to labor in it. It is very fertile. 
Since I addressed your society I have been investigating the 
question whether magnetic storms do not intensify local com- 
pass attraction, and endanger vessels navigating near basaltic 
rocks like those of Cape Sable, N. S., and the Newfoundland 
capes. I send you a paper I read to the Land Surveyors’ con- 
vention on a branch of this subject, which offers plenty of room 
for much more investigation. Again, I think I have discovered 
proof that the movement of the northern magnetic pole west- 
ward, which is by no means regular, as generally assumed, is 
regulated by the annual excess or defect of heat over the 
average of the North American continent, but the conclusion 
cannot be confirmed until we have magnetic observations and 
temperature observations at such places as Chicago, Minneapo- 
lis, St. Louis, Omaha, Spokane, as continuous as those fur- 
nished by Toronto, so here is a fine opportunity for your 
younger members after I have done with finite figuring. 
If these remarks will stand instead of an abstract of my ad- 
dress, you are quite at liberty to use them in your transactions, 
and if you are short of a paper this coming session I will try to 
supply one, as I feel much interest in the work of the astronomi- 
cal societies. JI am, dear Mr. Marsh, 
Very faithfully vours, 
ARTHUR: HARV EY: 
Dr. D. B. MARSH, President, 
258 Aberdeen avenue, Hamilton, Ont. 
