<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/19/164" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Copy of a draft letter, from Sir John Herschel to [Hugh Percy (3rd Duke of Northumberland)]</dc:title>
  <dc:description>Copy letter. Lady [Pleasance] Smith conveyed Duke of Northumberland's interest in John Frederick William Herschel's color photographs. Encloses others, and explains use of light-sensitive juices of flowers to produce colors.</dc:description>
  <dc:date>1840 to 1847</dc:date>
</rdf:Description>