Patagonia. During the early months of 1949, Maynard M. Miller and Robert L. Nichols participated with three Argentine geologists in a glaciological and geomorphological expedition to the Argentine Lake District. The party left Buenos Aires in the middle of February and journeyed southward to Lago Argentino by truck and jeep. Later, with two of the Argentine geologists, Miller travelled north to Tronador, whence they headed for Buenos Aires again late in April. The undertaking was under the joint auspices of the Argentine Museum of Natural Science in Buenos Aires and the American Geographical Society.