This nineteenth century invasion of the landowner's preserves by actions on the case for negligence occurred, however, before such actions were all ascribed to one general principle of liability. Indemaur v. Dames [3] was decided seventeen years before Lord Esher, then Brett M.R., said in Heaven v. Pender [4] , that "whenever one person is by circumstances placed in such a position with regard to another that everyone of ordinary sense who did think would at once recognize that if he did not use ordinary care and skill in his own conduct with regard to those circumstances he would cause danger of injury to the person or property of the other, a duty arises to use ordinary care and skill to avoid such danger" [5] . Lord Esher's colleagues on the Court, Cotton L.J. and Bowen L.J., expressly declined to concur in this. So that not until the famous pronouncements in the House of Lords in Donoghue v. Stevenson [6] and Bourhill v. Young [7] could the law of negligence be stated confidently in terms of a general principle. In the meantime decisions concerning the liability of an occupier to those who come upon his land seemed to have reduced this branch of the law to a formulary. The duty of the occupier is, however, rooted at bottom in his duty to his neighbour in Lord Atkin's sense. For, as Dixon J., as he then was, said in Lipman v. Clendinnen [1] , "The circumstance which annexes to occupation the duty of care, when it exists, is the presence or proximity of others upon or to the premises occupied. It is because the safety of such persons may be endangered that the obligation of care arises". [2] The formulary rules really do no more than state what the law has determined a reasonable man must do to discharge a duty of care arising in particular circumstances. And they are decisive only in cases where the plaintiff's case is founded upon the duty of the defendant as occupier for the safety of his premises. A plaintiff who can rely on a duty of care arising in particular circumstances is not to be defeated merely because the defendant is the occupier of the land on which he came to harm. His presence upon the land and the circumstances in which he came there may be merely elements in a total situation from which a duty of care arises, and not the foundation of the defendant's duty of care. As Taylor J. expressed it in Commissioner for Railways (N.S.W.) v. Hooper [3] , "circumstances may arise, unrelated to questions of the safety of the occupied premises, in which the obligations of the occupier for both negligent acts of commission and omission fall to be determined in accordance with the general principles of liability for negligence" [4] . Furthermore merely putting a plaintiff who sues an occupier into his proper order in the tripartite hierachy of invitee, licensee or trespasser may not be conclusive of the standard of duty an occupier owes to him. For, as will appear, sometimes plaintiffs who strictly were trespassers have, for reasons of humanity, been classified as licensees. And sometimes true licensees may, by the terms of their licence, be allowed upon the premises only at their own risk, and thus, if injured, be in no better position than a mere trespasser would be. This may be the result of express stipulation, as for example in Ashdown v. Samuel Williams & Sons Ltd. [5] ; or a similar condition might, I consider, be by implication annexed to a licence, at all events in Australia. For example, a station-owner, holding an area of say fifty thousand acres, might well have no objection to anyone walking or riding through his paddocks, provided he shut the gates and did not disturb the stock. But would he therefore be obliged to warn everyone who might avail himself of this licence of every hidden danger, natural or created by man, that the land might hold for him his horse or his dog - of quicksand in the creek, of the bridge become rotten, of the coils of barbed wire hidden by long grass near the sliprails, of dingo traps set? Surely not. Even the obligation to warn of poisoned baits, whether arising by statute or at common law, seems, ordinarily and in the absence of malice, to exist only when they are laid on public land or near a road or a boundary (N.S.W. Act No. 19 of 1902; Townsend v. Wathen [1] ; Hutchins v. Maughan [2] ).