The Victorians would place bits of chocolate in these Chocolate Pots and add hot water (some time later milk or a milk/water mix was used) and stir. These hot chocolate drinks would be used to give to children in the mornings and/or with breakfast. This would help warm them up and was a nice treat.
You can recognize the chocolate pot as it is usually quite tall and the spout is near the top. The reason for the placement of the spout is to insure that the chocolate becomes well mixed while pouring.
Maybe we should all try a bit of chocolate just the way it was made over a 100 years ago. How delightful.