Ridgeway discusses some of Ewart's critiques of the manuscript of his book. He reports that he is troubled about whether he is justified in stating that that the hock callosities are frequently absent in North African horses and ponies and asks Ewart to check a French reference from the work of Sanson. He asks Ewart for the loan of some illustrative blocks. He posits that changes in colour of horses and cattle could be due to domestication, and thanks Ewart for correcting some of his zebra nomenclature.