Historical trade-manual evidence. Preserve authorial attribution; not a present-day process.
Visual checks confirm printed errors as well as OCR problems: p149 includes 93.19 weight percent at 88 volume percent and p155 prints an invalid strengthening calculation, including 175 divided by15 shown as11 3/5. P153's generalized dilution wording subtracts100 regardless of starting quantity. Tables are preserved as historical artifacts, not imported into calculators. Cell-by-cell calibration against modern standards was not performed.
The text sets out a 100-proof/50-percent convention, distinguishes volume from weight and addresses hydrometer temperature correction and mixture contraction. It supplies Tralles and Beaume tables, dilution and strengthening examples, and boiling temperatures for saturated solutions.
PDF 160
PDF 150
Printed146–156; proof, percentage, hydrometers and heat tables
Paraphrase and locator checked against the supplied PDF; Verified refers to source fidelity, not independent factual or technical validation.
No access / 
Evidence
Paraphrase: The text sets out a 100-proof/50-percent convention, distinguishes volume from weight and addresses hydrometer temperature correction and mixture contraction. It supplies Tralles and Beaume tables, dilution and strengthening examples, and boiling temperatures for saturated solutions.
Location and context
PDF 150–160. Printed146–156; proof, percentage, hydrometers and heat tables.
Visual checks confirm printed errors as well as OCR problems: p149 includes 93.19 weight percent at 88 volume percent and p155 prints an invalid strengthening calculation, including 175 divided by15 shown as11 3/5. P153's generalized dilution wording subtracts100 regardless of starting quantity. Tables are preserved as historical artifacts, not imported into calculators. Cell-by-cell calibration against modern standards was not performed.
Annotation
Historical evidence, with attribution retained. Citation:
Verification checklist
Verified means source fidelity, not endorsement of historical chemistry or instructions.