30 
Italy: 
This is the point where forestry photogrammetry in Italy stands today. 
In the aerial forest photogrammetric work, which is to be executed during 
1952 of about 30.000 hectares of the state forest Sila in Catanzaro, photo- 
graphy with infrared film and the filter K/12 will be studied. 
Sweden: 
Except for a few private persons, systematic research is made by the 
Committee on Forestry Photogrammetry. The committee was appointed in 
1948 by the Fund for Forest Research and consists both of foresters and 
photogrammetricians appointed by the Board of Crown Lands and Forests, 
the Private Forestry Board, and the Geographical Survey Office. Its pur- 
poses are to study what possibilities there are for rationally exploiting 
aerial photographs in Swedish forestry. At the same time the committee 
has to deal with relevant administrative and organizational questions. It 
has tried to make use of foreign experience, as well as making its own 
experiments in its own experimental forests and in collaboration with 
practical forestry in Sweden. All these issues are dealt with in the memoran- 
dum »Flygbilden i skogsbrukets tjánst» (Aerial Photographs in the Service 
of Forestry) published in 1951. 
U. S. A.: 
The problems of forest photogrammetry, as the reporter sees them, 
depend on the answers to general photogrammetric problems and the 
problems of photo interpretation at the particular stage of development 
of the U. S. We need better photographs for the various forest condi- 
tions, he continues. In other words, research must first answer the ques- 
tions what film and filter combinations are optimum for various forest 
types, what time of year is best, what scale is best, what camera is best, 
what mounting is best and a host of other questions. These should be worked 
out for all of the different conditions. When it is found what equipment 
and scale and time of year give optimum results then compromise can 
be made intelligently that will give optimum results for the purpose of the 
survey. It is to this end that the Research Committee of the A. S. P. has 
pointed its investigations this last year and has compiled a bibliography, 
hoping by research to obtain at least some of the answers. It is felt by 
some that if the problems are broken down into their component parts 
and these are sufficiently small, many of the colleges and universities can 
contribute substantially to the eventual solution of the problems. It is felt 
by others that an Institute of Research should be established to handle 
the work and that the different private concerns should support such an 
institute. My own personal opinion, the reporter concludes, is that the 
former method is the more desirable at the present time but that the latter 
is the eventual solution. 
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