Table of Contents:
- General introduction
- pt. I.A. The birth of a hybrid between a Burchell's zebra and a mare. (Reprinted with a few verbal alterations from the Veterinarian for November 1896) B. Zebra-horse hybrids. (Reprinted from the Zoologist for February 1898)--pt. II. Telegony and reversion. (This paper in an abridged form was published in the Veterinarian, November and December 1897, and February 1898)--Appendix: Telegony. (Reprinted from the Veterinarian, April and May 1895).