56 Mr. Farey’s Remarks on the Trigonometrical Survey. 
conclusions as to the dimensions, figure and structure of the 
Earth. 
Entertaining as I do, a high respect for the person, abilities 
and labours of Dr. MacCulloch, and not being by any means de- 
sirous of undervaluing the Services to Mineralogy and Geology 
which he has performed, and on which | understand him to be 
yet engaged in Scotland, and with respect to a mineralogical 
‘Map and description of that Kingdom, as is briefly mentioned in 
p. 228 of your 56th volume, I hope and trust, that what I am going 
further to remark, may not give offence to that Gentleman or any 
of his Friends. It was naturally to be expected from the an- 
nouncement made in 1816, which is quoted in p.427 of your 
48th volume, that the making of minute stratigraphical Maps 
and Sections around each principal Station of the Trigonometrical 
Survey, in Scotland, at the least, was then intended: I have not 
however yet been able to learn, that any such materials for cal- 
culation, as to the existence and extent of local deflecting causes 
on the plumb-line in Scotland, have resulted fram Dr. MacCul- 
loch’s appointment ; or that anything has been attempted of this 
kind in England, by him or any other person. 
If Government have seen it right to devote a part of the public 
Money to the making of a Mineralogical Survey and Map of 
Scotland, (in addition to the sums devoted to its Canals, Bridges, 
Roads, &c.), it cannot surely wish to withhold the means, of com- 
pleting the Trigonometrical Survey of England, and of Wales and 
Scotland, which it has so long and Jaudably supported, in those 
remaining points connected with the Stratification, on which evi- 
dently so much of the minute accuracy of the whole is dependent, 
with reference to the dimensions, figure and structure of the 
Earth. 
Let me presume to hope, that the present season of Peace, when 
Expeditions are so liberally fitted out and appointed, for exploring 
distant regions, and when so many public Works are carrying on, 
may not pass away, without the services to Science being per- 
formed, which I have ventured to suggest: —I am not like Cap- 
tain Kater, able to offer gratuitous assistance to any considerable 
extent ; but as far as prudence can warrant, | would be ready to 
co-operate in the stratigraphical Surveys and investigations re- 
commended, if through the medium of any friends of Science 
amongst your Readers, such recommendation should be approved 
and acted on, by that department of Government to which it be- 
longs. 
I am, your obedient servant, 
37, Howland-street, Pitzroy-square. Joun Fargy. Sen. 
dune 17, 1821. é, f 
Puss 
