 "Rylands v Fletcher" contained the principle that "the person who for his own purposes brings on his lands and collects and keeps there anything likely to do mischief if it escapes, must keep it 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", with a requirement that this use of land be "non-natural".On the Cambridge Water Company's third claim, Kennedy was forced to consider the meaning of "non-natural" in this setting.He held that the use of industrial chemicals was not "non-natural", given that it was on an industrial site, and that for a claim to succeed under "Rylands" the use must be "some special use bringing increased danger to others, and must not merely be the ordinary use of the land or such a use as is proper for the general benefit of the community"; Eastern Counties Leather created jobs in Sawston, and was thus providing a benefit for the community.