In an effort to account for the low atomic weight of the lead from Bedford Cyrtolite I, as compared with that from another sample of Bedford Cyrtolite, designated as Bedford Cyrtolite II, Baxter and Alter1 had polished sections made of both cyrtolites, and found that both contained a small quantity of galena crystals. The area of galena, as estimated by Moehlman (included in the article by Baxter and Alter), in Bedford Cyrtolite I, is 0.05%. They were not able from an examination of the sections to detect such a difference between these two samples of cyrtolite as to account for the difference in the atomic weights of the lead.

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