Region B . F . du Spectre Solaire, 1899
First edition folio with 17 tables and an atlas of 17 engraved plates. Eugene Spee (1843-1924) was appointed astronomer at the Observatory of Bruxelles [Brussels], where he was especially concerned with solar physics. This work is obviously on the solar spectrum. CONDITION & DETAILS: Folio. [xvii], 1, [3], 49, [1]..... More