He also contributed largely to the Internationale theologische Zeitschrift, a review started in 1893 by the Old Catholics to promote the union of National Churches on the basis of the councils of the Undivided Church, and admitting articles in German, French and English.
Similarly in Europe they are often the property of the International Sleeping Car Company (Compagnie Internationale des Wagons-Lits), and the supplementary fares required from those who travel in them add materially to the cost of a journey.
Roberts, The Practice of Medicine (1909); Hermann Nothnagel, Internationale Beitrcige zur inneren Medicin (1902); Ed.
In 1892 he was a member of the Bureau Internationale des Poids et Mesures and in 1897 of the International Committee of Weights and Measures.