— 484 — 



aus: Zeitschrift f. Gletscherkunde, f. Eiszeitforschung u. Geschichte 

 des Klimas, VI, 1912. Berlin 1912. 

 Wilckens, 0.: Neuere Fortschritte in cler geologiscben Erforschung 

 Graubiindens. S.-A. aus: Geolog. Rundschau, III, H. l! 

 Leipzig 1912. 



Wieland, G. R.: On the Williamsonian Tribe. (A preparatory study 

 published by permission of the Carnegie Institution of Washington ) 

 S.-A. aus: The American Journal of Science vol. 32, December 1911. 

 Now Haven. 



— A Study of Some American Fossil Cycads. Part VI. On the 

 Smaller Flower-Buds of Cycadevidea. S.-A. aus: The American 

 Journal of Science vol. 33, February 1912. 



