Small Changes (1969), a collection of stories by Hal Clement. The Dell paperback edition later in the same year was re-titled to Space Lash. I rather liked this set - if you like Clement, you'll like these. 3 of these are only available in this collection (not taken up by the N.E.S.F.A. Press Essential Hal Clement, Volume 2.)

Dust Rag
Sun Spot
Uncommon Sense
"Trojan Fall"
Fireproof
Halo
The Foundling Stars
Raindrop
The Mechanic

These are from 1944 to 1966 - originally appearing in Astounding/Analog, Galaxy and If.