High School Biology in the 1930s

I've got a this for sale in my etsy store, Tokul Vintage. Dynamic Biology. The cover is gorgeous, deep red, cloth with an arts and crafts style print of a frog and lily pads. Well, you can see in the image below. Each page is chock full of information on biology ranging from the digestive system of frogs, humans and sea anemones to plants, trees, bears, moose, insects and sealife. And then in the back just before the book is about to end is the part about Eugenics. This was the science of perfecting the human race. There is actually an illustration of how to barricade immigration to Ellis Island in order to keep out the unsavory kind. Also included are the six recommended steps to sorting out the gene pool. This is what high school students in the 1930s were reading. Think about the people who would have been reading this stuff...some of the leaders of our past were high school students then. Well, I guess maybe the horrible acts that transpired in WWII put an end to including such nonsense in public school text books and I hope all school text books. The illustrations are awesome and if I hadn't paged through the book, I would have never noticed the part about Eugenics. Glad I did though. It was an education for me.