RT Journal Article SR Electronic T1 Seismoscopes and seismological investigations JF American Journal of Science JO Am J Sci FD American Journal of Science SP 97 OP 114 DO 10.2475/ajs.s3-35.206.97 VO s3-35 IS 206 A1 Thomas Corwin Mendenhall YR 1888 UL http://www.ajsonline.org/content/s3-35/206/97.abstract AB