IV 
Related presented papers: 
L'Aérotriangulation Analytique à l'Institut Géographique National 
R. Fórstner, The Accidental Error in Aerial Triangulation of Lens Flight 
Strips 
R. Forstner, Approximation Method of Block Adjustment in Aerial 
Triangulation with Special Regard to the Bridging of Adjacent Strips 
J. A. Weightman, Stereoblock Adjustment 
A. L. Nowicki and C. J. Born, Improved Stereotriangulation Adjustments 
with Electronic Computers M A ; 
MEETING ON MONDAY, 12TH SEPTEMBER 
Introduction by the Chairman, Prof Schermerhorn 
Invited paper: 
R. Roelofs, Radial Triangulation 
Author's presentation of the paper 
Discussion M wol 
Related presented paper: 
F. Ackermann, On the Adjustment of Rhomboids in Radial Triangula- 
tion ; : : . . . . : . . . : : 
Invited paper: 
A. J. Brandenberger, Aerial Triangulation with Auxiliary Data . 
Author's presentation of the paper 
Discussion 
FIRST MEETING ON WEDNESDAY, 14TH SEPTEMBER 
Presentation of the General Report 
Discussion on the General Report 
SECOND MEETING ON WEDNESDAY, 14TH SEPTEMBER 
Continuation of the presentation of the General Report 
Related presented paper: 
Travaux Expérimentaux d'Aérotriangulation; Compte-Rendu des Tra- 
vaux effectués par l'Institut Géographique National 
PRESENTED PAPERS NOT RELATED TO THE DISCUSSIONS: 
G. P. Le Divelec, L'emploi de la triangulation aérienne comme procédé 
normal de restitution de cartes topographiques et de plans techniques 
J. A. Eden, An Experiment with the Use of the Airborne Profile Recorder 
for Multiplex Heighting 
R. Fórstner, Errors in Elevation i in the Bridging of Stereoscopic | Models 
B. Hallert, Investigations into the Accuracy of Various Methods of Pho- 
togrammetric Triangulation ; 
H. M. Karara, Reduction of the Effect of the Deflection of the Vertical 
on Photogrammetric Work in Geodetically Unexplored Regions 
M. D. Konshin, Use of Airborne Devices for Recording Absolute Orien- 
tation Elements in Topographic Mapping 
K. Ryokichi, A Short Report of a Practical Method for Analytical Aerial 
Triangulation N 
seq 68 
18 pp 
7 pp 
6 pp 
22 pp 
8 pp 
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70 
75 
76 
77 
88 
101 
102 
104 
106 
107 
seq 108 
118 pp 
4 pp 
4 pp 
8 pp