This book documents the work of a young girl, Maria Merian, who lived during the Middle Ages and disproved the theory of spontaneous generation by observing caterpillars as they spun cocoons and emerged as butterflies and moths in the spring.
- ISBN: 9780805089370
- Author: Engle, Margarita
- Illustrator: Paschkis, Julie
- Published: 2010 , Henry Holt and Co. (BYR)
- Themes: life cycle, Metamorphosis, observation
- Descriptors: Biography - Autobiography- Memoir, Europe, Germany, Picture Book, Primary (ages 6-9)
- No. of pages: 32