The Suleimanite Atmosphere

"Esau."

Winds are "...slow..." (p. 527)

"That atmosphere bore thrice a terrestrial standard pressure. It was mostly hydrogen and helium, with vapors of methane and ammonia and traces of other gas. Greenhouse effect did not extend to unfreezing water." (ibid.)

Air is "...red-misted..." (ibid.)

"Wind moved ponderously between [ice buildings]. The air turned its sound, every sound, shrill." (p. 528)

"Nothing reached Dalmady's earphones except the wind, the distant wave-rumble, the clop of feet and creak of wagons." (ibid.)

(The point about the lack of sound is that Suleimanites do not talk casually although they do continually communicate by gestures, rippling fur and scent exchanges. Their rippling fur reminds us of Ythrians' rippling feathers.)

(We cannot help noticing the peculiarities of English spelling: "feet" and "creak" might have been misspelt "feat" and "creek.")

Notable:

A very un-Terrestrial environment where every sound is shrill.

Three references to wind. We expect plenty of wind, of course - although Poul Anderson sometimes transports us to airless planets where wind is impossible. The ponderousness of this wind seems to parallel Dalmady's imminent problems.