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Science  13 Jan 1950:
Vol. 111, Issue 2872, pp. 41
DOI: 10.1126/science.111.2872.41-a


In our recent article ("Production of Mesons by X-Rays," by Edwin M. McMillan, Jack M. Peterson, and R. Stephen White," Science, December 2), the second sentence in the last paragraph on page 581 contains a typographical error. When a negative πmeson is made by a photon striking a neutron, the products are π and p+, not π and π+. Also, near the center of page 580, in the third paragraph "π=mesons" was incorrectly printed for "πmesons."