In 1885 he became vicar of St Nicolas, Strassburg, and in 1889, declining an offer of preferment which was conditional on his becoming a German subject, be was expelled. For four years he was pastor of St Cierge in the Cévennes and then devoted himself entirely to historical research. He had already produced an edition of the Didache, and in November 1893 published his important Life of St Francis d'Assisi. This book gave a great stimulus to the study of medieval literary and religious documents, especially of such as are connected with the history of the Franciscan Order. In 1908 he delivered the Jowett Lectures on Modernism at the Passmore Edwards Settlement, London.
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