Seville being the best and that of Mexico worst, and I think they said
none but Seville is better than ours.

2. They melt it into long plates, which, if the mould do take ayre, then
the plate is not of an equal heaviness in every part of it, as it often
falls out.

3. They draw these plates between rollers to bring them to an even
thickness all along and every plate of the same thickness, and it is very
strange how the drawing it twice easily between the rollers will make it
as hot as fire, yet cannot touch it.

4. They bring it to another pair of rollers, which they call adjusting
it, which bring it to a greater exactness in its thickness than the first
could be.

5. They cut them into round pieces, which they do with the greatest ease,
speed, and exactness in the world.

6. They weigh these, and where they find any to be too heavy they file
them, which they call sizeing them; or light, they lay them by, which is
very seldom, but they are of a most exact weight, but however, in the
melting, all parts by some accident not being close alike, now and then a
difference will be, and, this filing being done, there shall not be any
imaginable difference almost between the weight of forty of these against
another forty chosen by chance out of all their heaps.

7. These round pieces having been cut out of the plates, which in passing
the rollers are bent, they are sometimes a little crooked or swelling out
or sinking in, and therefore they have a way of clapping 100 or 2 together