for
otherwise it will change its Colour Note that the Minerall Colours must be
exquisitly with the aforesaid Masse before it be put into the Crucible, Note
also to keepe it from stickeing to the Moulds it is cast in you must powder the
inside with Alcohol of Brine to keept it from stickeing,
9 Take of Tinglasse one part & of Lead 1 part melt them together
& then take of quicksilver 2 parts Amalgam them wel & poure them
them[] hot into the
<glas> vessel very well heated before
10 Take fritta & calcine Tin & melt them together & you
shall have a white masse but you must have a Care to watch it very diligently
& as soone as it has ever attained the desired Colour you must remove it
from the fire els you may loose your Colour. Of the same fritta mix with
appropriated Colours by the same way you may make all the other kinds of
Enamells
11 Take a sixpence & a peny weight of Antimony & the weight
of them both of red Oker melt these together & poure out the masse which
being powdered very small & dexterously applyed upon Heated Glasse will
tinge it a golden Colour one
<side>[replacing 'way'] & blue
[ 'anot' deleted] on the other.
February the 8th
12 Take infernall Ice draw thence in a Retort a penetrant &
sowrish Spirit 5 or 6 parts of this Spirit put upon Sal Sulphuratum & then
draw it of in a Retort with a graduall fire & there will come over at the
first or second impregnation a very peirceing Spirit & which towards the
later end of the distillation will bring the Sal Sulphuratum over the
helmet