The novel actually says
after conversing for a short time, turned and rode away in the direction from which they had come, leaving one of their number alone by the enclosure
I beefed it up a bit, making it more hushed and whispery, with Tarkas being more thoughtful, direct, and measured. And of course made the Tharks pissy about the whole thing. Like they generally are.
My HighJump web comic has now been funded! I can’t even begin to tell you how awesome that is. As of right now it’ll appear bimonthly, starting in August, and the schedule will not affect my delivery of your monthly dose of John Carter.
If you’d like to see what HighJump is all about, and maybe help us out with the production of BOTH A Princess of Mars and HighJump, then please check out the Patreon.