The wider and smoother rivers were crossed on 'balsas,' or rafts with sails.
Their boats or balsas were looked upon as ingenious contrivances.
The sun was as hot as upon the llanos along the river Balsas in Michoacan.
It was market day, and the balsas were carrying the peasants homeward.
We built a fleet of balsas with reeds and blown-out sheepskins, and followed him.
But the balsas are the most original, and, therefore, the most attractive sight.
Nevertheless, the species probably occurs throughout much of the Balsas Basin.
A small town in the Balsas Valley; arid tropical scrub forest.
The rafts, or balsas, referred to, were made by tying together a large number of reeds.
They alone employed a plank-built canoe instead of the balsas or canoe-shaped bundles of rushes of the greater part of California.