PT - JOURNAL ARTICLE AU - C. S. Peirce TI - On irregularities in the amplitude of oscillation of pendulums AID - 10.2475/ajs.s3-24.142.254 DP - 1882 Oct 01 TA - American Journal of Science PG - 254--255 VI - s3-24 IP - 142 4099 - http://www.ajsonline.org/content/s3-24/142/254.short 4100 - http://www.ajsonline.org/content/s3-24/142/254.full SO - Am J Sci1882 Oct 01; s3-24