"I tell you, you can't get smallpox medicine too strong.

Look at her now!" He held the bottle up admiringly.
"She's as black as lickrish.

I bet you she's strong all right!" "I wonder how she tastes ?" said Penrod thoughtfully.
"Don't smell so awful much," observed Sam, sniffing the bottle--"a good deal, though!" "I wonder if it'd make us sick to drink it ?" said Penrod.
Sam looked at the bottle thoughtfully; then his eye, wandering, fell upon Duke, placidly curled up near the door, and lighted with the advent of an idea new to him, but old, old in the world--older than Egypt! "Let's give Duke some!" he cried.
That was the spark.

They acted immediately; and a minute later Duke, released from custody with a competent potion of the smallpox medicine inside him, settled conclusively their doubts concerning its effect.

The patient animal, accustomed to expect the worst at all times, walked out of the door, shaking his head with an air of considerable annoyance, opening and closing his mouth with singular energy--and so repeatedly that they began to count the number of times he did it.