285-001 · page 14
…ery gentle fire, which do not increase before you see it necessary, and a yellow subtile oil or sublimate will come over, which smokes constantly, and consumes metals like a fire. (This oil ameliorates silver in digestion, but it is too much volatilized therein, so that it must be refixed, and by these means you obtain a white gold or Luna Fixa. (Agricola says that the foregoing process is of Poppius; he adds that[missing]is blackened by this process but not enriched with gold, and that there is no benefit from this digestion. He adds that this Liquor has some rapport with Butyrum Antimonii, and that if you cohobate this yellow oil or sublimate several times upon its own faeces, your oil will become of a ruby color. If you distill this oil or sublimate from Emeril (iron) this matter will give you an oil as red as blood. Agricola says…
Reader A inference, high confidence
silver (the alchemical symbol for Luna)
The preceding sentence establishes the subject: "This oil ameliorates silver in digestion, but it is too much volatilized therein... you obtain a white gold or Luna Fixa"; the missing word stood where the manuscript had the planetary symbol for silver.
Reader B published, medium confidence
sense: Agricola's objection that silver "is blackened by this process but not enriched with gold."
The next sentence in the same paragraph is the editor's report of Agricola's comment on Poppius; the word "missing" marks only the typographic break before that report. No lost alchemical formula is recoverable beyond what the page already attributes to Agricola.
Reader C
Not put to this reader.