Extract of a Letter from Mr. Humphry Marshall, of West Bradford, in Chester County, Pennsylvania, to Dr. Franklin, Sent with Sketches of the Solar Spots, Dated May 3, 1773

✍ Scribed by Marshall, H.

• Book ID: 120117023
• Publisher: The Royal Society
• Year: 1774
• Weight: 128 KB
• Volume: 64
• Category: Article
• ISSN: 0261-0523
• DOI: 10.1098/rstl.1774.0026