We may obtain, then, a just idea of the constitution of this liquid [milk], if we look upon it as a soft, liquid substance, a kind of loch,^* in which caseine, sugar, &c., are dissolved, and in which the fatty or oily substance is distributed in small, rounded atoms. [Footnote *: Loch, or lohoch, is an Arabian name for a medicine of a consistence between an electuary and a sirup, and usually taken by licking.[…]]