such royalties to be calculated and paid quarterly on the respective days fixed for the payment of the certain rents in every year.
4. There was a further provision for payment by the lessees to the appellants of a royalty of sixpence per ton on all coal which the lessees permitted to be carried or taken away or used, consumed or otherwise disposed of without having the same first weighed and entered into the books of accounts; and also for payment at the current market value for all timber which the lessees permitted to be carried or taken away or used or disposed of except for the pur- poses in the said lease provided.
5. It was also provided that a royalty of threepence per running foot should be paid by the lessees to the appellants in respect of any ironbark or mahogany cut, felled and carried away which should have a diameter of at least 18 inches.
6. The appellants in accordance with the provisions of the Land Tax Assessment Act duly furnished returns for the years 1914-1915, 1915-1916 and 1916-1917, claiming deductions in respect of the unim- proved value of the said lease calculated under the provisions of sec. 28 of the said Act on the basis of the annual rent of £500.
7. These deductions were allowed in each of such years by the Commissioner, and land tax was assessed and paid by the appellants accordingly.
8. The Commissioner has since required a return from the appel- lants showing the amounts received by them for rent and royalty for the above-mentioned years, and a return was made in response to such requisition showing such respective amounts to be £701, £2,483 and £2,217.
9. The Commissioner has reassessed the land tax payable by the appellants on the basis that the whole of the said amounts in the last paragraph set out are rent, and on this basis has allowed a much reduced deduction in respect of the unimproved value of the lease for the year 1914-1915, and no deductions at all for either of the years 1915-1916 or 1916-1917.
10. The appellants, by notice of objection dated 8th April 1918 and duly received by the Commissioner, stated their objections to the said reassessments as being for the following reasons: (1) the deductions under sec. 28 of the Federal Land Tax Assessment Act