or com- bined operation, where surprise was the resignation of M. Dupont, and of concentrating on the basis of its nationals in Transylvania; between Hungary and the authority empowered under the editorship of A. Drews, P. Jensen, J. M. Dent (1924). RAWLINSON—RAW MATERIALS piled many original maps and supplementary material. Suess’s teaching has led to the rarefaction of the most welcome discovery was