. First lessons in zoology. Zoology. THE AMCEBA, HYDRA, AND OTHER SIMPLE ANIMALS n? nuclei and two contractile vacuoles, the many fixed cilia, and the definite form of the body, which is inclosed by a thin skin or cell-wall, are all slight advances toward a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Kellogg, Vernon L. (Vernon Lyman), 1867-1937. New York, H. Holt and Company

---

Size: 963px × 2593px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1903