Notice of the council's intention to take over the road must be given to "the owner of the land comprising the road". Is the Permanent Trustee Company such owner? It was not suggested that it is not. But the question is of some importance for it is the owner who must be given notice and who can appeal to the District Court judge. I think the section must mean the person who, if the land be not a public road, is the owner - "owner" being defined in s. 4 as inter alia a person entitled to an estate of freehold in possession. If it be a public road, the Council has since 1920 been the owner. The assumption that for the purposes of s. 224 the Permanent Trustee Company as trustee of Saywell's estate is the owner, and the only owner, seems to me to overlook the doctrine that the owner of land adjoining a highway owns the highway too ad medium filum. This rule rests upon a presumption of the common law, and it is "too deeply embedded in the law to be disturbed or doubted" (per Lord Shaw of Dunfermline in The City of London Land Tax Commissioners v. Central London Railway [1] ). It follows that if a landowner who thus owns half the soil of a road (subject, of course, to the public right of way) conveys land bounded by the road, the conveyance will be construed as passing that land usque ad medium filum viae. Both the presumption of law and the rule of construction are rebuttable (see Norton on Deeds 2nd ed. (1928) pp. 252-259). But, except when rebutted by circumstances or modified by statute, the doctrine of extent ad medium filum applies in New South Wales. It does not apply in the case of lands that in a Crown grant are described as abutting on a road created by the Crown (Tierney v. Loxton [2] ). And since 1920 it has lost much of its importance in relation to other roads by reason of the provisions of s. 232 of the Local Government Act. But it was held to apply in 1916 when privately owned land under the Real Property Act was subdivided and allotments shown on the deposited plan as abutting on a road were sold and transferred by reference to the plan (In re Priddle [3] ). That decision has been criticized. But in 1930, after the decisions in Attorney-General v. White [4] and In re White [5] , relating to lands bounded by a river, the Real Property Act was amended by the addition of s. 45A. The doctrine of extent ad medium filum was at common law applicable to private roads as well as public roads (Holmes v. Bellingham [6] ). It is only in relation to public roads that it has been displaced by statute, and only since 1st January 1920. Therefore when Saywell transferred allotments abutting on St. George's Road he apparently conveyed also the soil of the adjacent parts of the road up to the middle line thereof - that is unless, notwithstanding In re Priddle [1] the presumption be rebutted in favour of Saywell and his estate by the circumstances, which in some respects resemble those in Leigh v. Jack [2] and Plumstead Board of Works v. British Land Co. [3] . If then any doubt exists whether St. George's Parade has ever become a public road, it seems that many doubts must also exist as to who owns it - or at least that half of it that lies on the western side of its middle line. The part on the eastern side of the middle line may still belong to Saywell's estate if it still owns the land adjoining the road on the east: see the statement of Romer J. in In re White's Charities [4] . The circumstances here are unusual, because it is uncertain who is the owner of the land east of the road. In fact it is the bed of the river. Whether Saywell ever had a title ad medium filum aquae, and whether, if so, it still remains in his estate need not be considered here, and it will not be determined, even indirectly, by the outcome of these proceedings. We know only that Saywell's certificate of title showed his land as bounded by the river. We do not know what was the form of the grants by the Crown of the various parcels of land consolidated in his certificate. Moreover the doctrine of extension ad medium filum aquae does not apply to tidal waters. In 1883 George's River was, it seems, not tidal above Liverpool. But that was because of the weir there. John Dunmore Lang in his History of New South Wales, 4th ed. (1870) vol. ii, p. 268, says that "the tide flowed to a considerable distance" above Liverpool before the weir was built there. But no evidence was given as to whether the river was ever tidal as far as Saywell's lands when they were first granted. None of these questions need be answered. Neither am I to be taken as indicating any view whether the vesting in the Council pursuant to s. 232 of the fee simple of a road along a river bank would give the Council a right to the bed of the stream ad medium filum. But doubts about the ownership of St. George's Parade, if it be not a public road, do not, I think, help the appellant. It claims that it is the owner of the road. It had no interest to allege and did not allege that the Council should have given notice to anyone else of its intention to take it over. As the person to whom the Council did give notice it invoked the jurisdiction of the District Court judge. He held that St. George's Parade had become a public road at some time in the past. I think there was some evidence on which he could do so, and that he had jurisdiction to come to that conclusion, at all events as against the appellant.