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With these considerations in mind and stimulated by discussions between 
authorities of the United Nations and Dutch representatives, the Nether- 
lands Government decided in 1950 to support the establishment in the Nether- 
lands of the International Training Centre for Aerial Survey. The Centre has 
been founded by the technical and agricultural universities of the Netherlands, 
representatives of which are on -the Governing Body. 
The aim of the autonomous foundation is to promote the science of 
aerial survey and to provide training in its practical application, particularly 
within the scope of International Development Schemes, In addition to a 
permanent staff of instructors of international experience, scientists and tech- 
nicians of repute will be invited to give special courses and lectures. Teachers 
representing every important school or trend will find in the Centre instruments 
with which they are familiar. In this way it will be possible to compare methods 
and apparatus. 
The following courses can be taken: 
I. Photogrammetry, including aerial photography, cartography, topography 
and engineering features of the terrain; 
II. Photogeology, including geomorphology; 
II. Soil survey and soil conservation by applying aerial photographs; 
IV. Forestry and forest inventory by applying aerial photographs. 
The duration of the courses will vary according to the preliminary training 
and the practical experience of the student. It will be between 4 months and 
2 years. The ITC is housed in an extension of the Geodetic Institute of the 
Technical University at Delft, and the photogrammetric equipment of this 
institute is also at the disposal of the ITC. Besides this, the equipment of the 
ITC will consist of Santoni Stereocartograph IV, Wild Autograph 7, Zeiss 
Stereoplanigraph C 8, Poivilliers Stereotopograph Type B, Wild Stereoplotter 
A 8, Kelsh plotter, and various other American instruments, A complete course 
in photogrammetry, enabling a photogrammetrist to be well trained on several 
of these instruments, will take about one year. 
CHAPTER VI — PHOTO-INTERPRETATION. 
For the first time photo-interpretation will be a special subject at the 
International Congress, and consequently it is also mentioned for the first 
time in our National Report. 
In the Netherlands the photo-geological interpretation, as carried out by 
the N. V. De Bataafsche Petroleum Maatschappij (Royal Dutch/Shell Group), 
was started as far back as 1934. This technique has been extensively developed 
by the geological department of that company. Because of the private nature 
of the use of this technique by Shell, very little material has been published 
11