Half Hours With The Lower Animals: Protozoans, Sponges, Corals, Shells, Insects, And Crustaceans is a book written by Charles Frederick Holder in 1905. The book is a collection of short essays that provide an introduction to the world of lower animals, including protozoans, sponges, corals, shells, insects, and crustaceans. The essays are designed to be read in half-hour increments, making it an easy and accessible read for those interested in learning...