Not a pre-thermomenter text, but a good summary: <a href="https:&#x2F;&#x2F;www.exploratorium.edu&#x2F;cooking&#x2F;candy&#x2F;sugar-stages.html" rel="nofollow">https:&#x2F;&#x2F;www.exploratorium.edu&#x2F;cooking&#x2F;candy&#x2F;sugar-stages.htm...</a>