The Ordnance Survey of Great Britain. 259 
Hint SHapine. 
- The hill features for the one inch maps are first sketched in the 
field by the military method of slopes and sketch contours or 
proof impressions of the contoured sheet. 
Finished drawings from the field sketches are then made on 
cardboard impressions from the one inch outline plates, and 
finished as guides for the engraver to work by. 
Beautiful and delicate in finish as is all the work of the copper- 
plate engravers on the Ordnance Survey, there is perhaps no 
branch in which they so peculiarly excel as in their delineation of 
hills on the one inch maps. 
IN ie 
It is impossible in the limits of a single paper to attempt to 
describe the methods and processes of publication which are car- 
ried at the headquarters of the Ordnance Survey at Southampton. 
Carefully prepared treatises on the subject have been written 
by officers engaged in the work, and for clear and concise descrip- 
tion none are better than the series of articles by Captain H. 
Sankey, R. E., published in Engineering, in 1888. 
There are two points of great interest In connection with the 
Ordnance Survey which cannot be neglected. The one its mili- 
tary organization, and the other the economy of its methods of 
publication. 
Of its military organization, which has continued since the 
first surveys were made for military purposes, it may be said 
that the conservative precision of its methods of field work 
are best adapted for military control and discipline. Under 
the successive superintendence of highly educated officers of the 
Royal Engineer Corps, whose patriotic efforts have been to 
secure efficiency and economy in the service, the country has 
greatly profited. 
Many of the improvements and inventions that have made 
possible the publication of maps of all scales at the lowest pos- 
sible cost, are the results of experiments made by these officers. 
It should not be forgotten in addition that as a branch of the 
War Office and the Publishing Department of the Intelligence 
Branch, military supervision is essential. Its offices are therefore 
not open for public inspection except on proper introduction. 
