Corrections and Clarifications


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Science  31 Aug 1979:
Vol. 205, Issue 4409, pp. 856
DOI: 10.1126/science.205.4409.856-b


In the article by W. V. Ligon, Jr., entitled "Molecular analysis by mass spectrometry" (13 July, p. 151), the sentence beginning on line 10, column 3, p. 157, read "The total sample weighed more than 100 micrograms." The sentence should have read "The total sample weighed less than 100 micrograms."