Ernst Heinrich Philipp August Haeckel was born on February 16, 1834. He was a biologist, naturalist, philosopher, physician, and artist who discovered and named thousands of new species. He was a friend of Charles Darwin and promoted his work in Germany. Haeckel wrote The Evolution of Man and mapped a genealogical tree which traces the relationship between all life forms. His extraordinary artwork includes over 100 detailed illustrations, some of which have been published by Dover Publications in Art Forms in Nature from which the illustrations in this book have been licensed.