The problem that we have to face in radiuming tumors is very complicated. … [T]he problem of distribution is to distribute throughout the territory irradiated an even dose, and we have found that that is a very difficult thing.

There is also the snag that many people prefer aircraft simply because they regard this is a travel medium that is with it.

Now, next to the greenhouses, a walk-in cooler is filling up with little cotton sacks and plastic bags, each containing thousands of seeds in every possible shape and shade of earth tone — olive-green pellets, reddish-brown shields, fluffy tan podlets with little wings.

He assessed the scene to check for any danger, and agreed it was safe.