DISCUSSION ON DARTMOOR. 
41 
SOME PRESENT-DAY EVIDENCE FOR THE 
RICAKDO THEORY OF RENT. 
SYLLABUS OF LECTURE BY D. D. DOBELL. 
(Read 24th November, 1887.) 
How economic rent is a genus made by mental abstraction, as 
regards a quality or attribute which many things otherwise 
different have in common. Ground rents, dead rents, royalties 
and other rents derived from land, mines, quarries, advertising 
stations, copyrights, patents, genius, referred to and differentiated. 
Margin of cultivation, how dependent on costliest produce yielding 
no rent ; and how the costliest produce fixes the natural value, 
and approximately the price, of produce obtained under better 
circumstances where there is rent marking the advantage. In- 
stances of how rents and the margin of cultivation are affected 
by international trade and prices. Falling rents. The reclam- 
ation of waste lands. The sense of private property. 
DISCUSSION ON DARTMOOR. 
W. GAGE TWEEDY, B.A. 
(1st December, 1887.) 
A discussion on Dartmoor was introduced by Mr. W. Gage 
Tweedy, who divided his subject into the following heads, each of 
which was separately treated, so far as time allowed. Concerning 
its Antiquities: Roads and bridges; pounds and enclosures; remains 
of buildings ; kistvaens and cromlechs ; rock ■ basins and logging- 
stones; mines and streamings; blowing-houses; tools and weapons; 
boundary-stones ; crosses and lych-stones. 
In the course of the discussion interesting particulars con- 
cerning the old roads and bridges, ancient buildings, pounds, and 
enclosures, cromlechs, rock basins, and logging-stones were given, 
and a greater variety of information perhaps elicited than could 
have been conveyed in a set lecture. The discussion of other 
points was adjourned to a future occasion. 
