Murray Leinster,
White spot
(1955)
“ The car crawled back to the highway. The waiting mass of jellylike monster was larger. It grew larger every instant, as fresh waves of its protaean substance arrived through the throbbing of the pseudopod back to the oasis."Turn on the walkie-talkie," commanded Borden.Jerry, white and shaken, threw the switch. An invisible beam of micro-waves sped down the valley behind the halted car. It reached the blob of jelly which now was as large as when it had started from the parent mass. The jelly quivered violently. ”
