The argument that par. (xx)'s grant of legislative power "with respect to trading or financial corporations formed within the limits of the Commonwealth" should be construed as not extending to laws with respect to the incorporation of such corporations focussed upon the word "formed". The legislative power could not, so it was said, extend to authorize laws governing the formation of such corporations since, until they are formed, they do not exist as the subject-matter of the power. Any superficial appeal of that argument does not, in my view, survive close examination. One objection to it is that it fails to distinguish between the abstract subject-matter of the legislative power and concrete instances of that subject-matter. One might as well say that a legislative power with respect to locally manufactured motor vehicles would not extend to laws governing the local manufacture of motor vehicles or that the legislative power with respect to lighthouses does not extend to laws governing the erection of lighthouses since, until it is manufactured locally or erected, neither the locally manufactured motor vehicle nor the lighthouse exists as such. Another objection is that the argument fails to accord proper scope to the words "with respect to" in s. 51 or to the settled principle which requires that par. (xx), which is a constitutional grant of plenary legislative power, be liberally, and not narrowly or technically, construed: "it should be construed with all the generality which the words used admit" (per Dixon C.J., Kitto, Taylor, Menzies, Windeyer and Owen JJ., Reg. v. Public Vehicles Licensing Appeal Tribunal (Tas); Ex parte Australian National Airways Pty. Ltd. [27] ). In that regard, it is important to note that the basis of the argument is a reading of the word "formed" as meaning "which have already been formed at the time of application of the relevant law". That constrictive interpretation of the word seems to me to be quite unjustified. In the context of the use of the phrase "formed within the limits of the Commonwealth" in contradistinction to "foreign", the word "formed" is properly to be understood as representing a use of the past participle as part of an adjectival phrase which is without temporal significance. As Stephen J. pointed out in Mikasa (N.S.W.) Pty. Ltd. v. Festival Stores [28] , such a merely descriptive use of the past participle is "common enough", it "is not the past tense , it is neutral in temporal meaning and applies equally to the future as to the past" (see, also, per Murphy J., Kathleen Investments (Aust.) Ltd. v. Australian Atomic Energy Commission [29] ). When the word "formed" is so understood, it affords no basis for excluding the formation or incorporation within the limits of the Commonwealth of trading and financial corporations from the scope of the legislative power granted by the second limb of par. (xx). To the contrary, it tends to focus attention upon that aspect of the grant of power.