(8) Any further particulars that may be required by the Government Inspector of Mines for the purpose of compiling statistics. [Sidenote: Royalty.] 23.—(1) There shall be payable to the Government by all lessees of mining leases a royalty of £5 per centum upon the value of all metal won. [Sidenote: Form of collection.] (2) If such metal or any ore containing metal be exported from the Protectorate, such royalty shall be collected in the form of an export duty payable upon exportation at any customs station in the Protectorate. [Sidenote: Value, how computed.] (3) The value of such metal shall be deemed to be the actual market price of the metal in the London market on the 1st day of January, April, July, or October next preceding the exportation. [Sidenote: Tin ore.] (4) The value of tin ore shall be deemed to be at the rate of 70 per centum of the value of metallic tin computed as aforesaid. [Sidenote: Penalties.] 24. Any person wilfully committing a breach of these regulations or refusing to obey an order lawfully given under any of the provisions thereof shall in addition to any liability to forfeiture provided by the Proclamation be liable to a penalty not exceeding £50, or in default to imprisonment for a term not exceeding six months. APPENDIX FORM I. THE MINERALS PROCLAMATION, 1910 (NORTHERN NIGERIA). PROSPECTING RIGHT ____, NO. ____. Licence, subject to the provisions of the said Proclamation and of the rules and regulations made thereunder, is hereby granted for twelve months from the date hereof to E. F. [_here insert name, address, and description of licensee]_ to prospect for minerals [_or as the case may be_] in such parts of the Protectorate as may not from time to time be closed to prospectors by Government Notice in the Gazette. This ____ day of ____ 19____ (Signed) GOVERNOR. FORM II. THE MINERALS PROCLAMATION, 1910 (NORTHERN NIGERIA), EXCLUSIVE LICENCE TO PROSPECT. NO. ____. The exclusive right, subject to the provisions of the said Proclamation, and of the rules and regulations made thereunder, for one year from the ____ day of ____ is hereby granted to A. B. [_here insert name, address, and description of licensee_] to prospect for minerals [_or as the case may be_] within the following limits [_here insert boundaries of area_] as the same are delineated on the map attached hereto and coloured. This ____ day of ____ 19____ (Signed) _Governor._ FORM III. THE MINERALS PROCLAMATION, 1910 (NORTHERN NIGERIA), MINING LEASE. [_Insert nature of lease._ See s. 17.]