In addition to these projects, special mosaics were introduced in 1954— 
99 to facilitate the planning of cutting operations. These mosaics comprise 
notes on cubic volume, type of stand and species. 
The map files of a forester’s office contain: 
set of contact photo prints. Scale roughly 1:20 000. 
set of general topographic maps of the region with flight strips marked on. 
set of mosaics, with insertion plastic sheets, in covers, scale 1:20 000. 
set of mosaics, loose sheets, scale 1:20 000. 
set of mosaics, in covers, scale 1:50 000. 
set of mosaics, as wall maps or pasted on cloth, scale 1:50 000. 
The chief forester’s office contains a similar supply of maps, plus extra 
mosaics, partly on scale 1:5 000, for special duties and as a reserve. 
With the exception of mosaics on scale 1:50 000 in covers, the rangers 
have the same material as the forester’s office. 
MM M m E pd E 
The cost per hectare for mapping of company owned land in 1949— 1951 
was approximately 1 Swedish crown. Of this cost, roughly 0.30 crown was 
spent on tracing the photos, 0.20 on drawing in details and the establish- 
ment of property boundaries, 0.05 on instruments and the balance on the 
triangulation of photos and the reproduction of contact prints and mosaics. 
Chief forester district of Munksund. Drawn maps have been produced 
for a wide region, where the use of aerial photos is restricted for military 
security reasons. Interpretation of stand boundaries etc. has been made 
on contact prints on the aproximate scale of 1: 20 000. As in the method 
c described earlier transfer of details to the true scale basic map on 
1:10 000, a recently made economic map, has been done by means of the 
Multiscope. All the details essential for forest mapping were then trans- 
ferred to transparent material by direct copying. Contour lines at intervals 
of 10 m and originating from photogrammetric maps produced by the 
Geographical Survey Office have also been added to the drawn map. The 
drawn map has subsequently been reproduced in the required number of 
copies by photographic method. The area thus covered is 900 sq. km and 
the cost of the mapping is estimated (1955) at about one crown per hectare. 
Mapping based on aerial photos is planned or already in progress in this 
and other districts. 
Mo och Domsjó AB 
This company, in conjunction with Svenska Cellulosa AB, in 1948—49 
'arried out the big scale pioneer work of introducing aerial photography 
methods, intended to replace conventionally drawn maps. A difference in 
the choice of methods may be explained by the fact that the property of 
the company had already been photographed by the Geographical Survey 
Office for the projected production of a general economic map. The basic 
work for this map, a photo map made by the Geographical Survey on the 
scale 1: 10 000, was already done however. This photo map could be used 
with advantage both technical and financial to replace the mosaies which 
the Svenska Cellulosa had to obtain. 
Copies of this photo map were in red color in respect of such map 
details as property boundaries, trails, roads etc. On the other hand, stand 
boundaries or boundaries of units were not sketched in at all. On the whole 
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