"It's just like the Mexicans to dance and sing at such a time.

I wouldn't be s'prised if Cos himself was here, an' I mean to see." He led the way down the little alley, which was roughly paved with stone, and, as they advanced, the sounds of music and laughter increased.

Unquestionably Governor Veramendi was giving a ball, and Ned did not doubt that the Panther's surmise about the presence of Cos would prove correct.
They found a little gate opening from the alley into a large patio or enclosed court.

This gate, like the first, was not locked and the Ring Tailed Panther pushed it open also.

The patio was filled with palms, flowering plants and a dense shrubbery.
The Ring Tailed Panther again led boldly on, and entered the patio, hiding instantly among the palms and flowers.