Month: February 2022

I’ve started working on a category of pigments called “lakes,” a name for insoluble pigments made from organic dyes.  Virtually everything in nature gives some sort of color; it’s just … Read More

The curators at the University of Pennsylvania are close to agreeing to spray a single copy of the motley emblem with some high-energy x-rays.  We’re hoping the page will give … Read More

I recently returned from a trip to the rare books reading room at Princeton, and thought it was high time to collect a few thoughts about some of the things … Read More

Today is a good, cold day in New Jersey, so I’ve turned the thermostat down to about 10C and am making up a batch of blue verditer.  I’ve been working … Read More