[Explanation. For the purposes of this clause, goods includes any article, material or substance which is capable of being bought and sold for a consideration and such goods shall be deemed to be marketable.]

(e) factory means any premises, including the precincts thereof, wherein or in any part of which excisable goods 19[* * *] are manufactured, or wherein or in any part of which any manufacturing process connected with the production of these goods is being carried on or is ordinarily carried on;