Hans Friedrich Gadow (1855-1928) was a renowned German zoologist, ornithologist and botanist. Originally published in 1930, this book presents Gadow's observations regarding the El Jorullo volcano in central Mexico, with information on its beginnings as a new volcano in 1759 and its effect on the plants and animals of the surrounding region. Illustrative figures and an appendix section are also included. This book will be of value to anyone with an interest in botany, zoology and volcanoes.