The object of this work was to present the problem of Tertiary man, and especially to deal with what is known of the primitive men of the Glacial Epoch; and in regard to them the author made it his aim to correlate and give equal weight to the evidence afforded by the four related sciences of geology, palaeontology, archaeology, and anthropology, so as to give the reader a complete picture of these ancient forefathers of ours, showing not only their cultural and bodily development, but also the climatic conditions and the animal world which constituted their environment. The closing chapter was devoted to the phases which marked the transition from the Pleistocene to the present geologic epoch, namely, to the Epipalaeolithic and the Protoneolithic. Originally published in Spanish, "Fossil Man in Spain" is here translated into English by Christine D. Matthew. [From the Preface to the English Edition]