Obituaries — Nécrologies - Nachrufe 
Adelino Paes Clemente 
On June 19, 1971, Eng. Adelino Paes Clemente, former President of the International Society for Photogram- 
metry, died in his 80th year. Eng. Paes Clemente was for a number of years Director General of the Institute 
of Cadastre and Geography of Portugal and for over twenty years President of the Portuguese Cadastral 
Council. He was President of the International Society for Photogrammetry from 1960 to 1964 and member 
of Council until 1968. 
While employed at the Cadastral Geographic Institute, he actively promoted geodesy in Portugal and 
completed a modern basic triangulation network. In addition, under his direction, a precise level framework 
was established as well as a system of modern gravimetric nets. Above all, he was recognized as an expert in 
cadastre and successfully introduce photogrammetric methods as a component part of the Portuguese cadastral 
mapping programme. 
As President of the International Society for Photogrammetry he was responsible for organizing the 10th 
International Congress for Photogrammetry in Lisbon in 1964. Those who were privileged to attend this 
Congress, retain fond memories of the fine hospitality extended to participants by their Portuguese hosts. 
Eng. Paes Clemente attended all Congresses of the International Association of Geodesy as well as our own 
Society and his photogrammetric friends will remember that he attended the Congress in Lausanne in 1968. 
At that time he had retired from his official duties but maintained his interest in photogrammetry and the same 
enthusiasm that he generated for so many years. He was deservedly recognized as the leading authority on 
Portuguese geodesy. 
Paes Clemente’s great sense of humour and his gentlemahly and friendly manner won for him a legion of 
friends from many nations. Those of us who were privileged to work with him on International Society for 
Photogrammetry affairs miss him greatly. 
Bertil Hallert 
On the 12th of February, 1973, Professor Bertil Hallert passed away at the age of 61. He was one of the pioneers 
of the modern Photogrammetry. After graduation in 1936 as Land Surveyor and studies in Germany, 
Switzerland and Italy, he took his doctor’s degree in 1944 at the Royal Institute of Technology in Stockholm, 
and was appointed Professor of Photogrammetry at the Institute in 1947. He was also employed at the 
Geographical Survey of Sweden during 1939 - 1947. His scientific production was early appreciated, and he 
has written about 200 papers on fundamental problems of the Photogrammetry. Particularly, he was interested 
in methods to analyse the photogrammetric parallaxes. Later on, his interest in the theory of errors became 
more dominating, and finally it carried him to methods, based on a careful calibration of the photogrammetric 
instruments. 
His scientific work met with international appreciation, and in 1956 he received the Talbert Abrams Award 
“For authorship and recording of current and historical scientific developments in photogrammetry ”’. Further, 
in 1961 he was conferred ‘Photogrammetric Award for outstanding achievement in the field of Photogramme- 
try" by Sherman Mills Fairchild. Hallert was an elected member of the Royal Swedish Academy of Military 
Sciences in 1950, and of the Royal Swedish Academy of Engineering Sciences in 1955. 
For Hallert science became an instrument to seek the absolute truth, and later on his thoughts were more 
occupied by problems which directly or indirectly could be associated with man's desire to find the truth. He 
devoted himself to the Photogrammetry with an anthusiasm of no limits. Therefore, it was natural for him to 
pay special attention to the contacts with other sciences, and there he could take pleasure in the progress of the 
photogrammetry within the medicine, odontology, archeology and the space science. 
Perhaps he found in the photogrammetric works in San Giovenale, the scientific elexir of life which made it 
possible to carry the heavy work load he dauntlessly had put on as a prefect and head of the Land Surveying 
Faculty. For the students he did everything to reach the new and high aims that were directing the modern 
university studies. 
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