Appletons' Popular Science Monthly, June 1899volume LV

A scientific publication produced in the late 19th century. This periodical aims to disseminate scientific knowledge and discussions on various contemporary scientific topics, reaching a wider audience through accessible writing and insightful articles. The focus is on advancing public understanding of the natural world, featuring detailed analyses and studies relevant to the societal context of the time, such as geological methods for estimating the age of natural wonders like Niagara Falls. The opening of this edition showcases an article by G. Frederick Wright that discusses a new method for estimating the age of Niagara Falls. It delves into the historical estimates made by prominent geologists, comparing them to new measurements that suggest a more accurate timeline based on geological surveys and the erosion of the falls. The discussion emphasizes the significance of these findings in understanding the geological history of the region and how they can alter the previous assumptions about the falls' age, engaging readers with a mix of historical context and modern scientific inquiry.