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In April 1857, the Committee of the Royal Society of Edinburgh for the reduc- 
tion of the Makerstoun Magnetical and Meteorological Observations consulted 
the late Mr Wxtsx with regard to the propriety of their continuing the publica-_ 
tion of these beyond the year 1846, the period to which it had been already 
extended in the Transactions of the Royal Society of Edinburgh (vols. xvii.—xix.) 
Mr WELSH expressed himself favourably with respect to the value of the 
observations, indicated the nature of the results which might best be obtained 
from them, and stated what was in his view the best method of publication. 
The Committee thereupon employed Mr B. Stewart to perform, under their 
superintendence, the reduction of the observations, as far as the end of the year 
1855, after which the series was considered to be incomplete. 
In performing this task, Mr StEwart has been very much aided by the 
various members of the Committee; and he would desire also to record his 
acknowledgment of the valuable advice he received from Mr Wetsu, who had a 
particular acquaintance with these observations, having been at one time himself 
associated with the previous observer, Mr Broun. 
Mr A. Hoge, the observer at Makerstoun, has also very kindly atforded 
whatever information was necessary. Mr Stewart is also indebted to Mr Cram 
and to Mr A. H. Buresss for efficient help in the reduction of the Meteorological 
Observations ; and also to Mr C. CHamBers of Kew, who has assisted in a very 
zealous and able manner in deducing the general magnetical results. 
MAG. AND MET. oss. 1847 To 1855, b 
