<?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">collodion pellicle</topic></authority><related type="broader"><topic>photographic film</topic></related><variant type="other"><topic>pellicle, collodion</topic></variant> <note xml:lang="en"><![CDATA[ Preparation for making sensitive plates which could be used in a dry or wet state (developed by W.B. Bolton in 1876).  ]]></note></mads>