Applauds CD’s expression of dissent from J. S. Mill’s view of differences of mental powers of men and women [Descent 2: 326–9]. Sends some corrections.

Thanks TA for information on ice calorimetric work.

Suggests alteration in Descent [1st ed. 7th thousand] in citing pagination of George Busk’s paper "The caves of Gibraltar" [Trans. Int. Congr. Prehist. Archaeol. 3 (1868): 106–67].