"SECTION 165. Establishment of Distillery Warehouse. - Every distiller, when so required by the Commissioner, shall provide at his own expense a warehouse, and shall be situated in and constitute a part of his distillery premises and to be used only for the storage of distilled spirits of his own manufacture until the tax thereon shall have been paid; but no dwelling house shall be used for such purpose. Such warehouse, when approved by the Commissioner, is declared to be a bonded warehouse, and shall be known as a distillery warehouse.

"SECTION 166. Custody of Distillery or Distillery Warehouse. - Every distillery or distillery warehouse shall be in the joint custody of the revenue inspector, if one is assigned thereto, and of the proprietor thereof. It shall be kept securely locked, and shall at no time be unlocked or opened or remain unlocked or opened unless in the presence of such revenue inspector or other person who may be designated to act for him as provided by law.

"SECTION 167. Limitation on Quantity of Spirits Removed from Warehouse. - No distilled spirits shall be removed from any distillery, distillery warehouse, or bonded warehouse in quantities of less than fifteen (15) gauge liters at any one time, except bottled goods, which may be removed by the case of not less than twelve (12) bottles.

"SECTION 168. Denaturing Within Premises. - For purposes of this Title, the process of denaturing alcohol shall be effected only within the distillery premises where the alcohol to be denatured is produced in accordance with formulas duly approved by the Bureau of Internal Revenue and only in the presence of duly designated representatives of said Bureau.