Doc Glasses Porthole

"They have secured Monk's gas," Doc explained. "They'll try to toss bottles of it into the secret doorway exposed by moving the idol."

"Then we'll move the idol back!" Monk grunted.

Straightway, exerting his enormous strength, Monk shifted the massive stone image of Kukulcan back.

A light sprang up below. One of the Mayans had lighted a torch. This was composed of a bowl filled with animal oils and equipped with a wick, not unlike an ordinary lamp. Evidently it had been placed in this weird place for just such an emergency.

"Chink the cracks with mud," Doc directed. "They'll break the glass bottles of the liquid that makes the gas, hoping it will seep inside."

"BUT what about our peepholes!" Renny objected. "We can't see them if they start up the stairs!"

For answer, Doc reached over and took off Johnny's glasses which had the powerful magnifying lens on the left side.

"Use the right glass--the one that does not magnify," he suggested. "Pack mud around it, and where could you find a better porthole. It will keep the gas out."

"Dag-gone!" Monk grinned. "I don't believe anything will ever stump Doc!"

- The Man of Bronze (1933) Chapter 19