Prince Igor: An Opera in Four Acts with a Prologue (1915)

Nature’s Gifts: Why We Must Not Lose Them, answers the question: Just what do we owe nature? It discusses how we have used nature in literature, from an early era, until the present. It deals with art, from an even earlier period, through recent times, to show the extent to which landscape is a central focus. It treats scientists, beginning with Pliny, to show that the main sources for their work are plants, animals, and other natural phenomena. The discussion also leans heavily on those who find great enjoyment in the out-of-doors, and in the case of John Muir and Alan Leopold, work for the preservation of the wilderness and the most effective and careful use of farm lands. The final chapter assesses the environmental movement that has come about, greatly because of our treatment of nature.