Best of
Environment

1958

Soap Bubbles: Their Colors and Forces Which Mold Them


Charles Vernon Boys - 1958
    Dozens of experiments require nothing more than soap, straws, and bits of rubber, yet they impart profound and fundamental concepts relating to the science of fluids. Geared toward readers without much background in the subject, the book begins without difficult calculations and concludes with only the simplest equations. Lucid and concise experiments allow observers to formulate their own practical understanding of soap bubbles and provide a foundation for more serious studies. More than 80 illustrations complement the text.

Snow Tracks


Jean Craighead George - 1958
    But when they reach the end of his trail, none of the animals can find the little mouse chief. Then another hunter appears in the woods—this one on two legs, not four. He follows the tracks left by the weasel, the skunk, the raccoon, and the fox, but where the others found a dead end, the two-legged hunter finds just what he was hoping for. This ebook features an illustrated biography of Jean Craighead George, including rare photos from the author’s personal collection.