RT Journal Article SR Electronic T1 On the conservation of force JF American Journal of Science JO Am J Sci FD American Journal of Science SP 32 OP 41 DO 10.2475/ajs.s2-30.88.32 VO s2-30 IS 88 A1 Henry, Joseph YR 1860 UL http://www.ajsonline.org/content/s2-30/88/32.abstract AB