Table of Contents:
- The mantis, by J.H.C. Fabre
- Fire ants, by H. W. Bates
- The condor, by C. Darwin
- Birds and man, by W. H. Hudson
- About cholera, by Sir E. R. Lankester.-The mastodon, by F. A. Lucas
- The unsolved problems of astronomy, by S. Newcomb
- The influence of coal tar on civilization, by E. E. Slosson
- The world of atoms, by J. A. Thomson
- The method of scientific investigation, by T. H. Huxley
- What knowledge is of most worth? By H. Spencer
- pyornis island, by H. G. Wells.