In the old university of Turku there were written about 4 400 theses. About 1100 of them havefound their way to Linköping in Sweden. This paper describes these theses, new variants whichwere found and some characteristics of their provenance. They are compared with the largebibliography over theses from Turku by Vallinkoski. A couple of theses with completeinformation which have not been available since 1827 were found. Several new variants werefound and together with the known variants they have increased our knowledge about use oftheses by students. Different variants could be designed to thank people at the Academy and inTurku, to thank people at home in Sweden who have contributed to the costsome studies andvery often to the bishop of the students home-diocese. There are even examples of wbichdifferent variants were printed for different dioceses.Theses from time before 1713 are quite few, about 150. They seem to have come to the libraryby private persons, mostly by priests who studied in Turku. No signs of other forms of distributioncan be seen.There are many more theses from the period 1722-1827. The collection is anonymous withhundreds of theses which never have been opened. This and other facts indicate amassdistribution. The author presumes that this massdistribution is connected with the exchangeof publications that started in Sweden in the 1740s initiated by the Uppsala university.