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To William Crawford Williamson   23 June [1846]

Summary

Does not remember where specimens came from. CD picked fossils most likely to contain Infusoria. Discusses composition of Tertiary strata of South America from which they came. Questions WCW’s statement that they contained siliceous matter.

Author:  Charles Robert Darwin
Addressee:  William Crawford Williamson
Date:  23 June [1846]
Classmark:  Missouri Botanical Garden Library
Letter no:  DCP-LETT-985
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letter (1)
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Darwin, C. R.disabled_by_default
Williamson, W. C.disabled_by_default