general photogrammetric problem. This remark is made especially with respect 
to the analytical treatment of an extended block, where the approach as outlined 
in this report still leads to a rather bulky matrix of normal equations, as 
shown in Fig. 17. 
Concluding, it appears that the problem of analytical photogrammetry today 
requires concentration not so much on the problem of the numerical treatment of 
‘the measured plate coordinates, but more on the technical difficulties associ- 
ated with problems of identifying and measuring precisely the contents of 
Dp photographs. 
| leue d. Lotus 
HELLMUT H. SCHMID 
1l 
81