Imperial Household Council how and when this event will take place. Article XXVIII of the Imperial Household Law provides that the Imperial Household Council shall consist of: Article XXX of the Imperial Household Law provides that other ten members shall be appointed as reserve members of the Council: The reserve members are as follows: , literally "Imperial Representative", refers to the Imperial Family members elected as members of the Imperial Household Council by mutual election among the adult members of the Imperial Family excluding the Emperor. They vote to elect two reserve members from the Imperial Family in the same way. Princess Yori
Imperial units of 1858 transferred to The Crown the right to publish the official pharmacopoeia and to regulate apothecaries' weights and measures. Metric equivalents in this article usually assume the latest official definition. Before this date, the most precise measurement of the imperial Standard Yard was metres. In 1824, the various different gallons in use in the British Empire were replaced by the imperial gallon, a unit close in volume to the ale gallon. It was originally defined as the volume of of distilled water weighed in air with brass weights with the barometer standing at at a temperature of . In