<?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">dry collodion negatives</topic></authority><related type="other"><topic>collodion</topic></related><related type="broader"><topic>negatives by process</topic></related><related type="broader"><topic>glass plate negatives</topic></related><related type="broader"><topic>plates</topic></related><variant type="other"><topic>collodion dry plate photonegatives</topic></variant><variant type="other"><topic>collodion dry plates</topic></variant><variant type="other"><topic>collodion negatives</topic></variant><variant type="other"><topic>collodion negatives, dry</topic></variant><variant type="other"><topic>collodion photonegatives</topic></variant><variant type="other"><topic>dry collodion glass negatives</topic></variant><variant type="other"><topic>dry collodion negative</topic></variant><variant type="other"><topic>dry collodion plates</topic></variant><variant type="other"><topic>dry plate negatives</topic></variant><variant type="other"><topic>dry plate photonegatives</topic></variant><variant type="other"><topic>preserved collodion negatives</topic></variant> <note xml:lang="en"><![CDATA[ Negatives produced by the dry collodion process, comprising several types developed between the mid-1850s and 1860s. These negatives were based on the same process as wet collodion negatives, but allowed for the plates to be prepared in advance, by adding a surface coating to the sensitized plates that kept the surface moist, extending the time between preparation and exposure. These plates required far longer exposure times and proved less popular that wet collodion negatives. ]]></note></mads>