A treatise on the origin, progressive improvement, and present state of the manufacture of porcelain and glass (1832)
[Porter, George Richardson], 1792-1852. [from old catalog] · Philadelphia, Carey & Lea · leaf 148
d when inthis continued progression the doubled portion opposite to theiron rod, and between the periphery of the glass and the ori-fice, is diminished to an annulus or ring only a few incheswide, this in an unaccountable manner instantly flies com-pletely open, and the glass is converted into a… … or lump which is called a bulVs eye. Twelve of these platesmake up what is called a crate or side of glass. The effect of this operation upon persons who witness it forthe first time is both pleasing and surprising in a high degree.The force wherewith the glass flies open at the close of theprocess…
Porcelain · Glass manufacture
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