Engineering Wonders of the World
Volume I

6 ENGINEERING WONDERS OF THE WORLD. STONEHENGE. One of the enormous trilithons. The comparative size may be judged of by the human figures in background. ments have perpetuated the memory of em- pires long passed away. In order to treat so large a subject as the present in the limits of a few pages, it is neces- sary to confine our attention to a few typical examples under each, branch of engineering. Arguments in favour of the habitation of Mars by rational beings are founded on the so-called “ canals ” that score the surface of the planet. Some authorities uphold that they have an order which could not have resulted from mere chance. Similarly with the mysterious Stonehenge, monuments at Stonehenge and Carnac. The huge stones of which these are composed impress one chiefly by their size, which in turn suggests the problem of how they were transported and erected. At Stone- henge still stand erect huge stones weighing individually many tons, while a number of their fellows lie prostrate around them. We THE “ TABLE OF THE MERCHANTS.” Plioto> L, k Xouzic, Carnac. A huge Dolmen at Carnac in Brittany. The horizontal stone is 18 feet long and 10 feet wide, and rests on the top of large upright slabs. A Dolmen is the central chamber of what was once a burial-ground.