12 REPORT—1845. 
of travellers be encouraged, and how?—by publication of their re- 
sults? At whose expense? Are there any extensive tracts of sea 
in which nautical surveys (Magnetic and Meteorological) would be 
desirable ? 
Db. Auxiliary Stations—By what means can chains or triangles of stations 
of meteorological observation be best encouraged or effected ? 
Should any attempt be made to carry out such a chain of posts 
northward from Toronto ? 
E. Problems Solved and to be Solved. 
Is it the opinion of the conference that the daw of diurnal change of the 
magnetic elements may be considered as satisfactorily ascertained for any and 
what station ? 
Is the law of daily range (disturbances excepted) of the magnetic elements 
or any of them made out ? 
Is the law of annual (periodical) fluctuation made out? Is its dependence 
on temperature ?—on evaporation ?—on precipitation ?—distinctly ascer- 
tained ? 
Is the direction and amount of secular change for any and what station made 
out ? 
Is Toronto favourably or unfavourably situated for,—I1st, the determination 
of the maximum or minimum quantity of dip, and has it been determined? 
Qndly, for the epoch of the turning point of dip, and has ¢hat been ascertained, 
or in how many years could it be ascertained, or is it xow possible to ascer- 
tain it at all? 
Has any correspondence in the magnitude and direction of great disturb- 
ances been perceived in very distant stations? 
Are days of great disturbance general though the particular phases differ 
in different localities ? 
Shall we, at the end of 1845, be in possession of data for computing the 
Gaussian constants for 1842-43, in virtue of the totality of observations 
made or to be made up to that time ? 
If not, is there a reasonable prospect that in a given time, say three or four 
‘years more, by proceeding as at present with observatories and surveys, we 
shall be so? 
Have the disturbance observations as yet manifested any intelligible con- 
nexion with aurora further than that certain auroras do and certain do not 
affect the needle ? 
Have the observations hitherto made held out any appearance of connexion 
with any other cause? 
In Meteorology.—Has any striking discovery been elicited by the observa- 
tions made, either at fixed stations or in the progress of the Antarctic ex- 
pedition besides that of the lower barometric pressure already noticed ? 
Has M. Dove's resolution of barometric fluctuation into two elements 
received any confirmation ? 
F. Particular Suggestions deserving Consideration. 
Is it desirable that meteorological registers made at sea in toto—or re- 
duced—should be published ? 
Would it be desirable if practicable to publish monthly or quarterly returns? 
Would it be advisable to procure from the Royal Society, or other quarters 
where meteorological observations are published, extra copies of these alone 
for circulation among meteorologists? and how are they to be circulated? 
and who to bear the expense ? 
