Adam, George [b. 1846] - EARTHQUAKES. An Astronomical Question. With ALs

San Francisco: C. A. Murdock & Co. Printers, 1906. 1st printing. Printed self-wrappers, stapled. Now housed in a clear archival mylar sleeve. 15, [1] pp. Attached to the front wrapper is an ALs from Adam to the editor of Astronomical Notes, asking for 'careful consideration'. Illustrated with cuts. 8vo. 9" x 5-3/4". Pamphlet - VG+. ALs with split along fold, otherwise VG. The author attempts to explain the cause of Earthquakes as having an extraterrestrial casual factor, a study no doubt inspired by the [then] recent event in San Francisco. OCLC records just 5 cc.