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Offers AD a puzzle and JH's solution to AD's problem about a body revolving in the evolute of an ellipse. On sending Francis Baily's correspondence to Greenwich.
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Thanks JH for discovering an important error in a work WS asked him to proof read. Asks JH about a variable in Canis Minor over which there is some debate.
Thanks for having sent various publications; believes that the Academy's intention has been to send JH complete series; states which issues JH has not received.
Thanks THH for his response on glacial movement. Hopes Tyndall will experiment on broken ice and explain how two pieces of ice can freeze together.
Sorry to hear of THH’s row with Richard Owen.
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