Preface 



The papers collected in this volume represent the formal proceedings of the Third 

 European Symposium on Calcified Tissues which was held in Davos, Switzerland 

 from 11th to 16th April 1965 under the sponsorship of the Laboratorium fiir experi- 

 mentelle Chirurgie, Schwelzerisches Forschungsinstitut Davos. This Symposium fol- 

 lowed the now established tradition of the previous Symposia held in Oxford in 1963 

 and in Liege in 1964. Participation was again strictly on a residential basis. This year 

 the Schatzalp Hotel provided a scenic and secluded meeting place high on a mountain 

 side overlooking Davos yet close to the Forschungsinstitut in which the opening 

 session of the Symposium was held. 



The papers and communications published in the volume are arranged in order of 

 presentation and are grouped under the five main themes selected for discussion by 

 the Symposium, namely, "Cell function in the formation, maintenance and destruc- 

 tion of osseous tissue", "Response of calcified tissues to mechanical factors", "Mecha- 

 nisms of mineralization and diseases related to mineral deposition", "Hormones and 

 bone" and "Fundamental structure of dental hard tissues". The programme consisted 

 of a number of review lectures given by invited speakers and of short communications 

 in relation to each of the above themes. No attempt was made to record the dis- 

 cussions to the papers as, being a residential meeting, the more valuable and interest- 

 ing interchanges took place informally in small discussion groups and not within the 

 time schedule of the prearranged programme. 



The Committees wish to express their thanks to the staff of the Laboratory for 

 Experimental Surgery, Davos for their most valuable help and to all of the following 

 who made this meeting possible through their financial support: Zentralverband 

 schweizerischer Milchproduzenten; Nestle Alimentana S.A., Cham et Vevey; Sandoz 

 AG., Basel; Robapharm AG., Basel; Ciba AG., Basel; J. R. Geigy AG., Basel; F. Hoff- 

 mann-La Roche & Co. AG., Basel; Dr. A. Wander AG., Bern; Emser Werke AG., 

 Domat/Ems; Laboratorien Hausmann AG., St. Gallen; Davos-Parsenn-Bahnen AG., 

 Davos; Kleiner Rat des Kantons Graubiinden; Landschaft Davos; Migros-Genossen- 

 schafts-Bund, Zurich; Schweizerische Unfallversicherungs-Gesellschaft, Winterthur; 

 Treupha AG., Baden; Siegfried AG., Zofingen; Verkehrsverein Davos. 



The European Symposium on Calcified Tissues is held annually and Professor 

 P. Gaillard's invitation on behalf of the University of Leiden to meet in Holland in 

 1966 has been warmly accepted. 



The editorial committee: The organizing committee: 



H. J. J. Blackwood C. A. Baud H. G. Haas 



H. Fleisch M. J. Dallemagne L. Richelle 



M. Owen H. Fleisch R. Schenk 



