Science Ladders by N. D'Anvers

Published by G. P. Putnam's Sons
1. Forms of Land and Water
2. Story of Early Explorations
3. Vegetable Life
4. Flowerless Plants
5. Lowest Forms of Water Animals
6. Lowly Mantle and Armor Wearers

G. P. Putnam's Sons published this series in 1882. The six in one book was published in 1884. The titles are American first editions.

Illustrated

The six books were published as board books. None of them have been seen.

Below is the six in one book which contains the contents of all six books in the series.

Cloth. Green. Black cover lettering.