104 BUREAU OF AMERICAN ETHNOLOGY [bull. 52 



placed in the cavities of the anvil-stones. The second proof consists 

 of the presence on stones, split from end to end, of two conchoid 

 facets, one at each end, without a transverse interruption between 

 their fields of irradiation." 



In conclusion, Professor Ameghino declares (p. 203): 



."The facts shown seem to me to be more than sufficient to justify 

 my first affirmation that we are in the presence of a new stone 

 industry." 



Some attention is given to mmor worked stone objects, flakes, 

 etc. (pp. 203-204) : 



"From the fabrication of this hatchet-chisel implement there 

 resulted, as was natural, a very large number of flakes of all forms? 

 which were utilized for cutting, scraping, or perforating, and on which 

 use has produced characteristic wear and defects wliich often give 

 these flakes interesting forms." 



No mention is made of the numerous quartzite implements, etc., 

 which occur in the same localities. 



In a still more recent publication, Ameghino ^ makes further remarks 

 on the stone industry under consideration. He speaks of (p. 23) "the 

 fireplaces and crude worked stones which our faraway ancestors left 

 buried in the IVIiocene and Pliocene layers of Monte Hermoso, Chapad- 

 malal. Mar del Plata, and Necochea." And again (p. 24) he reiterates: 

 "The stone industry of the Homo jpampaeus consists of oblong peb- 

 bles chipped at one extremity and of an aspect still more primitive 

 than that of the eoliths of Europe." 



THE "broken-stone" INDUSTRY 



In an article published on the occasion of the meeting of the 

 American International Scientific Congress in Buenos Aires, in July, 

 1910,^ Ameghino reasserts his beliefs as to the stone industry pre- 

 viously described by him, and in addition reports still more primitive 

 and ancient worked stones from Monte Hermoso. The principal parts 

 of this last report are given below: 



"It is only a couple of months ago that, in announcing the primi- 

 tive split-stone industry, characteristic of the Middle Pliocene of the 

 Atlantic coast south of Mar del Plata, I said that this rudimentary 

 industry should have been preceded by another, showing the part- 

 ing of pebbles by knocking one against another, for the purpose of 

 utilizing the pointed and sharp fragments resulting fi-om the sep- 

 aration. 



1 Ameghino, F., Geologla, paleogeografia, paleontologla, antropologla de la Repdblica Argentina. 

 Estudio publicado en el Nvlmero Extraordinario de La Nacidn (Buenos Aires), del 25 de Mayo de 1910. 

 Separate, pp. 1-26. 



2 Ameghino, F., La industria de la piedi'a qiiebrada en el mioceno supei-ior de Monte Hermoso. Congr6so 

 Cientifico Internacional Americano, Buenos Aires, 1910, pp. 1-6. 



