They have accordingly engrossed a very large share in the disquisitions of the speculative in all ages.

Whether or not it will remain lost for ever, with the material and origin of it, are things equally speculative at the present time.

One of the more highly speculative of the Bolivian writers, Señor Posnansky, of La Paz, believes that gigantic balsas were used in bringing ten-ton monoliths across the lake to Tiahuanaco.