There was one factor that neither he nor Kennely had considered sufficiently. Both the models had required several hundred man hours of work in their construction. Why couldn't they find one person who had contributed? Many must have had a part in it.

Where did Mac fit in? Devon wondered. Surely he must know more than he was admitting.

The next morning, Kennely was already at his desk when Devon entered.

He removed his pipe and looked up. "Shall wo check the weather?"

"You check it," said Devon. "I think I'm getting scared of the answer."

"It's not quite time, but maybe it's close enough to interpolate the values. Let's have a look."

They went in and turned Devon's equipment on. The values were markedly different from the ones predicted the day before.

"We'd better wait," said Kennely. "Notice that the temperature readings appear to be of the air outside the building instead of inside."

"There's no sensitive element connected outside."

"Let's check on it with some thermometers."