Believes GM’s human bones from Gibraltar must be of very doubtful age. Lyell agrees, but feels any skull found should be forwarded to George Busk or Hugh Falconer.

Suggests GM look carefully for shells in the drift.

Thanks WHF for photographs [of niata ox skull]. Will tell Quatrefages de Bréau about the cast. May have the photographs copied for woodcuts to illustrate his book on variation under domestication.