Some Records of the Rocks [ 77]
By N.S. Shaler.
The Pitch Lake in the West Indies [ 97]
By Charles Kingsley.
A Stalagmite Cave [ 111]
By Sir C. Wyville Thomson.
The Big Trees of California [ 119]
by Alfred Russel Wallace.
what is Evolution? [ 127]
By Professor Edward S. Holden.