<p>This is a preview of a longer installment. Subscribers can enjoy every episode in full: &lt;a href=&quot;https://podcasters.spotify.com/pod/show/thoreausleaves/subscribe&quot; rel=&quot;ugc noopener noreferrer&quot; target=&quot;_blank&quot;&gt;https://podcasters.spotify.com/pod/show/thoreausleaves/subscribe&lt;/a&gt; </p> <p>March 29, 1853</p> <p>Henry does a little digging and discovers &quot;a wonderful piece of chemistry.&quot;</p> <p> </p>