Nature's Miracles: Familiar Talks on Science, published in 1900, is a discussion of science and technology for the general public. Volume I, subtitled World Building and Life: Earth, Air, and Water, covers a wide range of topics, including the formation of the Earth, the atmosphere, the oceans, and the living organisms that inhabit them. Gray's writing is clear and engaging, and he does an excellent job of explaining complex scientific concepts in a way that is accessible to readers of all backgrounds.