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1l? ANALYTICAL AERIAL TRIANGULATION 
Prof. E. H. THowrsow (University College — London WC 1 — Great Britain) 
Dr. G. H. Scxur (National Research Council - Sussex Drive — Ottawa — Canada) 
2° THE PROBLEM OF BLOCKS OF STRIPS 
Ing. M. BONNEVAL (2 Avenue Pasteur — St. Mandé — Seine — France) 
Dr. H. G. JERIE (International Training Centre — Delft — Netherlands) 
39 RADIAL TIRANGULATION 
Prof. R. RoErors (Technische Hogeschool — Laboratorium voor Geodesie — 
Kanaalweg 4 — Delft — Netherlands) 
49 USE OF AUXILIARY DATA FOR CARRYING OUT AEROTRIANGULATION 
Prof. Dr. A. J. BRANDENBERGER (Institute of Geodesy, Photogrammetry and 
Cartography — The Ohio State University — Columbus 10 — Ohio — U.S.A.). 
By chosing these 4 fundamental topics around which to concentrate the interest 
of the future Congress participation, the Presidency of Commission III has meant to 
comply with the Commission's resolutions taken at Stockholm, which directed to se- 
lect beforehand the topics to be discussed and the appointment, by the President, 
of a ground of experts to whom to entrust a discussion prepared and deliberated in 
advance. 
With a view to allow more freedom to individual initiatives, very frequently of 
great importance, both to science and to technical spheres, discussion Members were 
not chosen by the President, but were accepted to join the discussion, all those having 
something really useful and meaningful to say in the matter. 
In the same way, and always in compliance with the Stockholm's carried deci- 
sions without exerting any pressure or following any pre-established program, the 
I.S.P. scientific activity has fully complied with, and we could also say, has reached 
completion by that very turning from À and B Commissions of the O.E.E.P.E. 
The similarity of intents, the complementary research interest of the two Orga- 
nizations, have established those inevitable scientific collaboration contacts that must 
exist where there is a common aim urging-on experimental enquiry researches in their 
work. Yet, despite this fully balanced co-alliance, the proceeding methods of one 
and of the other Organizations are greatly different. 
Clearly scientifically based are the set-lines, the intentions and the whole bearing 
of the one; whilst 1t 1s very frequently tended to practieal applications the bearing 
of the other. 
To have included with the subjects interesting the Commission the one concerning 
experimental enquiries conducted by A and B Commissions of the O.E.E.P.E., goes 
to prove the full values of this wish for collaboration. 
2. — THE Commission III's EXPERIMENTAL RESEARCH AND THEIR ORGANIZATION 
Resolution N° 3 carried by the Commission at the end of the Stockholm Congress, 
récommends to continue the « Essais Contrôlés » also in the period 1956-1960 and, asks 
the President to fix the new rules, helped by the experience already acquired and by 
consulting the Commission Experts in advance. 
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