Reactions to On the Origin of Species one hundred million years." Copies of the second edition were advertised as ready on 24 December, in advance of official publication on 7 January 1860. The "Saturday Review" of 24 December 1859 strongly criticised the methodology of Darwin's calculations. On 3 January 1860, Darwin wrote to Hooker about it: "Some of the remarks about the lapse of years are very good, & the Reviewer gives me some good & well deserved raps,—confound it I am sorry to confess the truth. But it does not at all concern main argument." A day later, he said to Lyell "You saw I suppose
On the Origin of Species under way, Darwin wrote to Lyell offering the suggested publisher John Murray assurances "That I do not discuss origin of man". In the final chapter of "On the Origin of Species", "Recapitulation and Conclusion", Darwin briefly highlights the human implications of his theory: In the distant future I see open fields for far more important researches. Psychology will be based on a new foundation, that of the necessary acquirement of each mental power and capacity by gradation. Light will be thrown on the origin of man and his history." Discussing this in January 1860, Darwin assured Lyell that "by the