I just got a new book from Lindsay - "A Day at the Factory".
It was originally written in the 1840's, and was a series of articles published in a weekly magazine that aimed at enlightening the layman about how things were made etc.
These articles are all about visiting various industries and factories and explaining how they made things.
One of the chemical factories is making alum, and there is an illustration of this huge eery opaque sort of crystal about 2 metres high.
It explains how this was done, and one or two new and improved methods.
The descriptions don't give exact details or specific amounts, just general methods and ingredients.
Very interesting book....but it has been borrowed by a friend already, so that is why I am sounding vague on how they made alum...
It was originally written in the 1840's, and was a series of articles published in a weekly magazine that aimed at enlightening the layman about how things were made etc.
These articles are all about visiting various industries and factories and explaining how they made things.
One of the chemical factories is making alum, and there is an illustration of this huge eery opaque sort of crystal about 2 metres high.
It explains how this was done, and one or two new and improved methods.
The descriptions don't give exact details or specific amounts, just general methods and ingredients.
Very interesting book....but it has been borrowed by a friend already, so that is why I am sounding vague on how they made alum...
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