Jackson, Thomas Graham, Sir, 1835-1924 · Cambridge, University Press · leaf 172
olated points, that is on the piers that dividebay from bay. But the system was not complete, for thebuilders of Vezelay did not understand at first the needof strengthening these points sufficiently to take thisconcentrated thrust: and to their surprise the vaultsbegan to push the walls out, the… … r-4/.£- ^-^ ^*^ fig- 93 (V.-le-Duc). 102 FRANCE—BURGUNDY [CH. XXII Vezelay, the vault Vezelay,naithex Vezelay,nave V Still the step first taken at Vezelay was a great advanceon previous construction, and led on naturally to thefurther development of vaulting on more scientificprinciples. The choir…