Please understand that this is a used book. [Overview] This is a paperback edition of a collection of various biological sketches drawn by the German biologist Ernst Haeckel in the 19th century. This book, composed of 100 beautiful and artistically drawn biological illustrations, features a wide variety of creatures. These include microscopic organisms such as radiolarians and foraminifera, as well as marine life like jellyfish, starfish, calcareous sponges, and barnacles. It also includes plants such as mosses, lichens, red algae, ferns, fungi, and orchids, along with animals like turtles, moths, spiders, bats, frogs, lizards, hummingbirds, and chamois. The book contains numerous carefully drawn illustrations, showcasing the forms of life as a wonderful work of art created by nature.