University of Belgrade, University Library „Svetozar Marković”

Ivan Djaja’s doctoral dissertation

Ivan Djaja

Ivan Djaja’s doctoral dissertation

Dragana Stolic

Djaja earned his PhD in 1909 after defending his thesis Etudes des ferments des Glucosides et des Hydrates de Carbone chez les Mollusques et chez les Crustacés (Study on ferments of glycosides and carbohydrates in mollusks and crustaceans) at the Sorbonne.

Djaja dedicated this comprehensive 250-page study to his mentor, professor Albert Dastre (1844-1917), a French physiologist and a member of the French Academy of Sciences and a student of Claude Bernard (1813-1878) and Paul Bert (1833-1886) who was especially successful in the field of physiological chemistry. Accoding to the Preface, Djaja conducted his research between 1905 and 1909 at the Laboratory of Physiology at the Sorbonne, at the Biological Station Roskoff and at the Marine Biology Research Institute in Brittany which was founded in 1872 by professor Henri de Lacaze-Duthiers (1821-1901) who taught at the Sorbonne. In the Preface Djaja expressed his gratitude to Zivojin Djordjevic, a zoology professor at the University of Belgrade who in 1910 suggested Djaja became an assistant professor at this University. The copy of the dissertation is kept at the University Library as a personal gift of the author. The introductory part of the disserataion is available at

Digitized dissertations of Serbian scientists defended abroad which are part of the University Library collection are available at Both full-texts and excerpts from some dissertations are available at the portal due to the copyright. Among the dissertations which were defended in the 19th and the beginning of the 20th century there are works by Mihailo Petrovic Alas, Jovan Skerlic, Aleksandra Belic, Ljubomir Nedic, Vojislav Jovanovic Marambo and many others.

Dissertation Table of Contents