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Wackerbarth, Francis Diederich (1813-1884) Pontécoulant, Philippe Gustave Le Doulcet (1795-1874) Comte de
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Autograph letter signed to W.H. Smyth

Not written to JCA: probably to Smyth who is named as author of the Speculum. Acknowledgement of gift of copy of WHS and JL's Speculum Hartwellianum (A cycle of celestial objects... 1860).

Articles by brothers Pontecoulant in Encyclopedie du xixme siecle discredit JCA's part in the discovery of Neptune. As disgraceful as their tone in the controversy with JCA over Moon's acceleration. Encloses something for Dr. Lee.

Wackerbarth, Francis Diederich (1813-1884)