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During four busy days, from the 17th to the 20th 

 of September 1956, a conference on electron mi- 

 croscopy was held at the Karolinska Institute in 

 Stockholm. The conference was organized in about 

 seven months by the Scandinavian Electron Mi- 

 croscope Society at the request of the International 

 Federation of Electron Microscope Societies. It 

 represented the first European regional conference 

 arranged under the auspices of this federation. 



The organizing committee consisted of the Com- 

 mittee of the Scandinavian Electron Microscope 

 Society with the addition of a few other members 

 of that society. Financial support for the conference 

 has been granted by the Swedish Government through 

 the Minister of Education, Mr. I. Persson, and 

 through the State Research Councils on Agriculture, 

 Natural Sciences, and Technology. The members of 

 the organizing committee express their appreciation 

 for this important support. 



When the conference was opened by the Rector of 

 the Karolinska Institute, Professor S. Friberg, it 

 proved to have attracted 370 participants from 27 

 countries (see the list overleaf). 



The number of participants and of papers by far 

 exceeded what had seemed reasonable to expect for 

 a regional conference. In fact, with 176 papers read, 

 this conference represented the largest meeting of 

 electron microscopists ever held. It proved to be a 

 difficult problem to squeeze this program into the 

 time limits. An unavoidable consequence was to run 

 mostly two and, temporarily, three parallel sessions. 



An extensive and representative exhibition of 



electron micrographs and of electron microscopes 

 and accessories had been arranged. The participants 

 had the opportunity of seeing the following types 

 of electron microscopes in performance: Akashi 

 Troncoscope, Philips EM 100 B and EM 75 B, 

 RCA EMU 2 and EMU 3c, Siemens Elmiskop I, 

 and the prototype of the new Zeiss electrostatic 

 microscope. 



The tragic death of Professor Bodo von Borrics 

 on July 17, 1956, overshadowed the conference. In 

 commemorative addresses. Dr. V. E. Cosslett, Sec- 

 retary of the International Federation of Electron 

 Microscope Societies, and Professor E. Ruska, hon- 

 oured his pioneer work in electron microscopy. On a 

 proposal of Dr. J. Hillier, this conference will be 

 referred to as the "Bodo von Borries Memorial 

 Conference". 



The Proceedings of the Stockholm conference 

 have been edited with two major aims: to have the 

 proceedings in print in the shortest possible time, 

 and to keep their size within reasonable limits. We 

 have therefore had to cut down the editorial work, 

 to exclude summaries, to restrict the space available 

 for pictures, and to shorten the texts of several 

 papers. We feel that a great deal more could have 

 been done from an editorial point of view. 



These Proceedings are dedicated to the Memory 

 of Bodo von Borries, in accordance with a proposal 

 made by Dr. J. Hillier and by the decision of the 

 Committee of the Scandinavian Electron Microscope 

 Society. 



Stockholm, February 1957 

 Fritiof S. Sjostrand 



1 — 568204 Electron Microscopy 



