Alexander Wood Renton, 1911 Encyclopædia Britannica, Volume 8… (1911)
“ For example, a man builds two houses, each of which by the plan of construction receives support from the other; this mutual right of support is a quasi-easement, of which on severance of the tenements the grantee of one will have the benefit; where the enjoyment of the severed tenement could not be had at all without such a right, it is said to be an “easement of necessity.” ”
