Mr <persName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0012148 http://d-nb.info/gnd/118523813">Darwin</persName> is now in very<pb xmlns="http://www.tei-c.org/ns/1.0" n="3r" />fair health, though often <lb xmlns="http://www.tei-c.org/ns/1.0" />ill for several days at a time. <lb xmlns="http://www.tei-c.org/ns/1.0" />He is performing a set of most <lb xmlns="http://www.tei-c.org/ns/1.0" />interesting experiments on the <lb xmlns="http://www.tei-c.org/ns/1.0" />vitality of seeds after immersion <lb xmlns="http://www.tei-c.org/ns/1.0" />in Salt-water which will <lb xmlns="http://www.tei-c.org/ns/1.0" />be of the highest importance, <lb xmlns="http://www.tei-c.org/ns/1.0" />these observations, & his <ref xmlns="http://www.tei-c.org/ns/1.0" xml:id="a15fd290-592e-47b1-9fd2-90592e77b178" corresp="#a5fe0fff-2b10-49b2-be0f-ff2b1049b280" type="editorialNote">great <lb />work on <hi rendition="#uu">Species</hi></ref><note xmlns="http://www.tei-c.org/ns/1.0" xml:id="a5fe0fff-2b10-49b2-be0f-ff2b1049b280" corresp="#a15fd290-592e-47b1-9fd2-90592e77b178" type="editorial"><bibl corresp="https://edition-humboldt.de/63WU32SC">Darwin 1859</bibl>.</note>, now occupy <lb xmlns="http://www.tei-c.org/ns/1.0" />his attention almost exclusively.