<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">egg</topic></authority><related type="other"><topic>eggs</topic></related><related type="other"><topic>eggshell</topic></related><related type="other"><topic>egg candlers</topic></related><related type="other"><topic>egg carriers</topic></related><related type="other"><topic>egg punches</topic></related><related type="other"><topic>egg toppers</topic></related><related type="other"><topic>egg washers</topic></related><related type="other"><topic>egg tempera</topic></related><related type="other"><topic>egg-oil tempera</topic></related><related type="broader"><topic>animal material by egg and egg components</topic></related> <note xml:lang="en"><![CDATA[ Material derived from eggs, which in the context of art materials are usually the ellipsoidal shell and embryonic contents produced by birds. For paintings, the egg contents are used as a tempera medium. The whole egg, yolk, or white may be used sometimes mixed with oil and/or resin. The egg yolk is a stable emulsion of an aqueous liquid with an oily, proteinaceous medium which dries quickly into a hard, insoluble film. Egg white has been used as a medium for illuminated manuscripts. It is also used as a size for attaching gold leaf. Albumen is the adhesive substance of egg white. As a pure film, albumen is clear, brittle, and water soluble. Water solubility can be decreased by heating or adding tannin. For the exterior of a bird egg comprising the brittle shell composed of keratin and calcite, use "eggshell (animal material)." ]]></note></mads>