Manly P. Hall Collection, Box 10

care to avoid pulling out the raw material mixed with the flowers. The fire must be no stronger than that required to keep tin in a molten, red state. One can hardly make more than a pound of these flowers in a day.

The second way to make the flowers is the one done by the aludel A pear-shaped pot used in sublimation. in the manner of sublimation.

The third is done by the tubulated retort A glass vessel with a long neck and an opening at the top for adding substances.. These last two are preferable to the first, because the volatile mercurial spirits are retained and not lost.

The tubulated retort or the bottom of the aludel must be very red, and you must project the zinc in granulated form or thin plates, putting it in at different times and little by little. The receiver must be very large and exactly luted Sealed with a paste or clay to be airtight.. This mercurial spirit passes in white vapors, like that of vitriol, and reduces into a diaphanous (transparent) liquid like spirits of wine. It is as tasteless as water, though otherwise it is very penetrating. It is this mercurial spirit that is the Radical Moisture of mixtures. If one wishes to have it in quantity, one must use mineral zinc that has never been melted, because in that state it has not lost any of its spirit through the fire of fusion.

It must be melted in a flat crucible, and it must be observed that in all fusions of zinc, the crucible must be