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Thanks JH for criticisms of her manuscript. Will outline principles more carefully. Hopes Lady Herschel is 'gaining strength.'
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Sends first revised pages [of MS's Mechanism of the Heavens] back for further opinion. Highly respects JH's comments and believes he will be a truthful critic as a friend.
Asks whether JSH can send specimens of some of the rarer plants found in the Cambridge region. Invites him to Edinburgh and offers access to duplicates.
Discusses JSH’s description of the leaves of Malaxis paludosa and states that he made the same description at an earlier date but did not publish it. Casts doubt on the observation that they are parasitic.
Requests British specimens of Malaxis paludosa and offers JSH a Swiss specimen.
Thanks JH for his communications. Anxious to get into the proof JH criticized. Sends [Joseph] LaGrange's variations of constant quantities.
Sends new translation of [P. S. Laplace's] Mécanique céleste. Says her revision [of MS's Mechanism of the Heavens] has been effective. Still doubts the derivation of the fundamental equation. Discusses force, resistance, and reaction with regard to this equation.
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Says manuscript [Mechanism of the Heavens] cannot be improved materially except perhaps on one or two small points. Will look at it again when it is together in a whole. Announces birth of JH's daughter [Caroline] that morning.