Suggested drawings.
- Acorn-tongued worm, × 1.
- Lancelet, × 1.
- Lamprey, × ½.
- Shark: 1, head as far as the pectoral fins; 2, the tail.
- Perch, as directed for shark.
B. Studies of Amphibia
Progress from Water-living Animals to Land-living Animals
The Living Frog or Toad
To show how an Animal may be adapted to both Land and Water Life
Materials.
Living frogs in small cages or aquaria; living toads; some pungent liquid, as ammonia.
Observations.
The Body.