.

A CHEMICAL DEMONSTRATION.
Raffles Haw led the way through the front door, and crossing over the gravelled drive pushed open the outer door of the laboratory--the same through which the McIntyres had seen the packages conveyed from the waggon.

On passing through it Robert found that they were not really within the building, but merely in a large bare ante-chamber, around the walls of which were stacked the very objects which had aroused his curiosity and his father's speculations.

All mystery had gone from them now, however, for while some were still wrapped in their sackcloth coverings, others had been undone, and revealed themselves as great pigs of lead.
"There is my raw material," said Raffles Haw carelessly, nodding at the heap.

"Every Saturday I have a waggon-load sent up, which serves me for a week, but we shall need to work double tides when Laura and I are married, and we get our great schemes under way.