Comments on the relationship between the plane of the earth's orbit and the obliquity of the ecliptic.
Comments on the relationship between the plane of the earth's orbit and the obliquity of the ecliptic.
Comments on proofs [of Principles of geology, 10th ed. (1867–8)]: CL does not allude to the specialisation of classes.
Discusses CL’s argument from the absence of Cetacea in Secondary rocks;
finds his discussion of man "superfluous and too orthodox".
More comments on proofs [of CL’s Principles of geology, 10th ed.]. Discusses permanence of continents and other points.
Refers to passage describing evaporation of snow in Journal [of researches, pp. 277–8].
Cites astronomers’ views on increasing length of day.
Comments on some of CL's writings; further argues that a canal at Suez and/or Darien would have a major effect on European climate due to the effect of ocean currents coming through such canals.
Did not intend to trouble him with his proofs, but as he has cited JH in the chapter dealing with the astronomical effect on climate he sends proofs for this chapter. Would like to quote JH's two letters on the subject. The whole book is set up and hopes to send the volume in November.
Some minor suggestions regarding CL's proofs [see CL's 1866-10-19].
Was pleased to get his twelve pages of slips returned this morning. In one he proposes an alteration of 3% instead of 1003 to 1000. Which is correct?