The workshop where these guns are made and the tools used were next shown us, and were very remarkable.

An open shed with a couple of small mud forges were the chief objects visible.

The bellows consisted of two bamboo cylinders, with pistons worked by hand.

They move very easily, having a loose stuffing of feathers thickly set round the piston so as to act as a valve, and produce a regular blast.

Both cylinders communicate with the same nozzle, one piston rising while the other falls.