Is sending him an engraving of his late father. Sees that JH has finished his work he told him about.
Is sending him an engraving of his late father. Sees that JH has finished his work he told him about.
Asking JH to accept his book on the rock crystals.
Thanks GD for memoir on the subject of geological transformations.
Thanks for pictures of Mars; speculates on the atmospheres of some planets.
Is pleased that JH likes his plates of Mars. Has a great collection of drawings of Mars but only a few of Venus. Hopes by the Spring to have the photoheliograph working. Has just completed his volume on the eclipse for 1860.
Expresses happiness that JH's health has improved and comments on various family matters.
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