Boyle WorkdiariesWorkdiary 34Page 19 of 20
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gentle fire destill what will come over in a retort, and this Liquor will answer the most insipid part of the Experiment, then cohobate this liquor upon the Caput mortuum 15, 16, or even 20 times, and with the coagulated remains which will be copious proceed according to art Haveing deleted

[Retrospective marginalia:]
N

Haveing made good Sublimate and sublimd it according to art twice or thrice from Sal Gem you may then make our compounded Sublimate by makeing a fourth part so much in weight of our other Ingredient <I thinke {sal ammoniac}>in pencil in Boyle hand incorporate & fly up with it, then letting this mixture run per deliquium add to the liquor it will afford a fourth part as of deleted as much of the deleted new simple Sublimate as it tooke at first of the like Sublimate, put them deleted mix this with the Water last obtaind & distill them over together giveing at length a briske fire for a pretty while & with deletedpencil the obtained liquor <will be a mercuriall water solvent>replacing 'proceed s. a.', unidentified hand <of Metals>insertion in line in Boyle hand

[Integral marginalia:]
July 3d

{Recipe} Sublim'd Nigerus and mixing it very well with an equall weight of Takola dry<ve>in pencil them up both somewhat slowly what is raised mix again with what remains and reiterate the operation the 2d time, as also the 3d about which usually the matter will remain almost totally at the bottom like white marble Let it run per deliquium filter the Solution from the faces, distill slowly off the phlegm which reserve by it selfe for other purposes. Then drive over in a Retort what remains cohobate it once or twice adding halfe the weight of Takola you tooke at first and twill almost totally come over in a Liquor which will serve for divers uses but if you would have it stronger digest it 4 or 5 dayes with as much <elevated> Nigerus and Takola as you employed at first, for the liquor will dissolve