Vats shall ordinarily be used for the storage of spirit but a limited number of casks or drums may, subject to the provisions of Rule 64 below, be kept in the store room for the storage of special kinds of spirit, such as whisky, and for the use in collecting quantities withdrawn from store vatss in slight excess of requirements and the like and a limited number not exceeding 30, or [casks or drums] filled according to Rule 106 of these rules for issue, may be kept temporarily in the store room for issue to purchasers.
