The only other question is whether the amounts of these debts, though deductible under sec. 53, still fall within sub-sec. 2 (B) of sec. 49, so as to be taxable as "personal estate taken under any gift," &c. A careful examination of sec. 49 will demonstrate the impossibility of such a result. Sec. 49 establishes a field of taxation by way of "Duties on estates of deceased persons." But that field is marked out into two distinct portions, the dividing line being unmistakable. Sub-sec. 1 embraces "all estate whether real or personal" which "belonged" to the deceased. That is every particle of property he had at his death, and it means the gross amount of that property. Sub-sec. 2 establishes an entirely separate class, consisting of various elements, which, though distinguishable from each other, possess one common characteristic, namely, they did not belong to the deceased at the time of his death. It follows that the class of property embraced in sub-sec. 1 and that embraced in sub-sec. 2 as a whole are mutually exclusive. Now, sec. 53 provides that the "debts actually due and owing by him" shall be deducted from "his estate." That is, his debts shall be deducted from his estate. After gathering and valuing up in gross the whole of the property belonging to him at the time of his death, you deduct part of that gross value, namely, the amount of his debts, so as to get the net amount of his own property. "Deduction" means taking away part of the thing from which the deduction is made. Since the debts are treated as part of the first class and since the two classes are mutually exclusive, it necessarily follows that the debts are not part of the second class, and consequently do not fall within the expression "personal estate" as used in sub-sec. 2 (B) of sec. 49. It is easy to see how unjustly and irrationally the contrary view would operate. A debt that falls within the third sub-section of sec. 53 - as, for instance, a gift such as the present, if the testator had died within three months after the deed was executed - would not only not have been deductible under sec. 53, but would have actually been added to swell the taxable estate under sec. 49 (2) (B), making his estate notionally £18,000 more than he ever had or could have had, and simply because he created an obligation against himself. That is absurd, but it is also contrary to the obvious meaning of the section.