I looked into the little workshop behind his sitting-room, and found it full of ingenious adaptations.

The turning lathe occupies a considerable part of it; but when he requires more space, the village smith with his stithy, and the miller with his water-power, are always ready to help him.

His tools, though not showy, are effective.

His best lenses are made by himself: those which he buys are not to be depended upon.

The best flint glass is obtained from Paris in blocks, which he divides, grinds, and polishes to perfect form.
I was attracted by a newly made machine, placed on a table in the sitting-room; and on inquiry found that its object was to grind and polish lenses.