Assertion: elevator's design | /r/HasProperty | based on balanced water-filled caissons
Facets:
value: in erasmus darwin's commonplace book
type: LOCATION
Source sentences:
text: The idea of a boat lift for canals can be traced back to a design based on balanced water-filled caissons in Erasmus Darwin's Commonplace Book (page 58-59) dated 1777–1778