Giacomo ducked in what he intended for a bow, but it seemed more like the toppling of a stricken pine-tree. He said nothing.

"Has your master told you what we require?" questioned Matteo.

"Only that we are to obey your Magnificences' orders."

"Do you like to fight?"

Beppo grinned from ear to ear.

"We always enjoy a good fight, don't we, Giacomo?" he answered.

Giacomo's face was convulsed by what must have been meant for a grin of approbation, and one hand caressed the hilt of the knife stuck in his sash.

"Well, you are like to get all the fighting you care for," said Matteo. "We have a dangerous venture. Know you the fondaco Pisano?"

"Yes, lord. It is east beyond the Rio di Santa Polo."

"Good. We watch the fondaco Pisano for one who travels in a green gondola. When he appears we follow him wherever he may go. If we can, we will seize him. Is it understood?"