On rereading the Origin, offers a criticism on two grounds: 1. Blending inheritance; 2. The tendency of species to elude competing species. Also competition within species eliminates the weak and thus preserves the species.
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On rereading the Origin, offers a criticism on two grounds: 1. Blending inheritance; 2. The tendency of species to elude competing species. Also competition within species eliminates the weak and thus preserves the species.
Sends a photograph of himself.
Encloses copy of JH's essay entitled The Yard, the Pendulum, & the Metre... (1863). Speculates on causes for deviation in pendulum measurements. Recommends using torsion gravimeters in 'proposed operation.'
Committee pamphlet expressed incorrect representation of JH's views on changes in British standards of measurement.
In response to the gift of a book, JH comments on the philosophy of knowledge, and goes on to say that JH agrees with [John Stuart ?] Mill's rejection of the syllogism as a means of argument. In the postscript, JH comments on the nature of heat.