The earliest people in the Front Range area left scant record. During the Pleistocene, the first migrations of Oriental people crossed the Bering land bridge and some eventually moved into Colorado. Cliffdwelling Pueblo cultures developed in southwestern Colorado about 2000 years ago, with more nomadic tribes like the Ute and Apache arriving in Colorado about 700 years ago (Brown, 1985).

This latest volume on Remote Sensing of Geomorphology edited by Paolo Tarolli and Simon Mudd gives a refreshing new look at a group of topics and processes that have greatly intrigued quite a number of scientists most interested in using new technologies to investigate the landforms of our home planet.

Water-related hazards—including floods, droughts, rainfall-triggered landslides, soil salinization—and their impacts have increased significantly in the past decades. This increase has spurred research into improving monitoring and prediction, understanding the underlying drivers, implementing various mitigation and adaptation strategies, and identifying interconnectivity with other factors such as climate change, population growth, exposure, and socioeconomic development.

Under the auspices of the Ministerio de Fomento of Peru, Mr. R. E. Coker was engaged in making studies and collections of animals of the Peruvian coast with the intention of contributing to the knowledge of the aquatic resources of the country. In the course of this work numerous economic notes were made in relation to the animals obtained.

On the portion of the collection consisting of Mollusca, the authorities of Peru, through the intervention of Mr. Coker, have requested the writer to prepare a report.