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of it, "I accompany the drawing with a diagram (N.^o2) which exhibits in a more definite and clear manner the exact form of those remarkable structural details of the solar surface." And again;- "Diagram N.^o2 conveys a pretty clear idea of the manner in which these remark- able details are arranged, in forming, as they do, the entire luminous surface of the sun." Therefore regard this as a fanciful theory which has no foundation in fact. But is it not extraordinary that, after so clear and decided a statement, Mr. Nasmyth should accept Mr. Stone's 'rice-grains' as being identical with his'willow-leaves,' even on the surface? - objects whose proportion is as 2 to 1, the same as those which are as 10 to 1! This seems to me to give up the willow-leaves on the surface, and to destroy the assumed value of Mr. N.'s first observations. The, as to the claim that these objects constitute a 'new discovery' by Mr. N. They have been familiar to me as irregularly formed granulations since the year 1830,

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