In Rylands V Fletcher, Blackburn J Formulated the Rule as Follows

In Rylands v Fletcher, Blackburn J formulated the rule as follows:
'the person who for his own purposes brings on his land and collects and keeps there anything likely to do _____ if it escapes, must keep it in at his peril and, if he does not do so, is prima facie answerable for all the damage which is the natural consequence of its escape'.