18 



SCIENCE. 



[X. S. Vol. XVIU. No. 444. 



tinguaites and oamptonites, as well as vogesite 

 and diabase. Two main streams now drain 

 the hollow formed by the down-cutting of the 

 ■dome where the weaker andesite has been laid 

 bare as far as the limestone cover has been 

 cut back. 



Dr. Finlay's paper was discussed by Pro- 

 fessor Kemp, who called attention to the fact 

 that the character of the intruded limestone 

 was not yet entirely clear; and by Dr. H. S. 

 Washing-ton, who dwelt on the interest attach- 

 ing to the additional localities here and else- 

 where recently reported for the peculiar dyke 

 Tocks mentioned. 



The second paper of the evening was by 

 Fred H. Moffet, Columbia University, and was 

 entitled ' The Copper Mines of Cobre, Santi- 

 ago de Cuba.' 



In this paper Mr. Moffet said in abstract: 

 The copper mines of El Cobre are located 

 about nine miles west of the Bay of Santiago, 

 where a series of eruptive flows, andesites and 

 Thyolites, are interbedded with frag-mental 

 rocks, agglomerates, breccias and tuffs. The 

 strike of the beds is east and west, and they dip 

 at a low angle to the north. The series is cut 

 by trap dykes and by two major systems of 

 faults, the older of which runs east and west 

 and carries with it the large ore bodies. The 

 second major system has direction nearly north 

 and south. Cross faults cut and displace the 

 ore bodies of the older system, and carry cop- 

 per, though in less amount. The copper work- 

 ings of the old English mining companies pro- 

 duced enormous quantities of very rich ox- 

 idized ore which gave place in the lower levels 

 to sulphides. Much difficulty is encountered 

 in handling the mine water on account of the 

 porous nature of the country rock. At the 

 present time the iron ore of the region is of 

 much greater commercial importance than the 

 copper. 



In the discussion which followed. Professor 

 Kemp spoke of the great importance to the 

 United States steel furnaces which these de- 

 posits possessed on account of their great ex- 

 tent and convenient location. The ore is ex- 

 tremely low in phosphorus but contains some 

 sulphur. The copper may again be of great 



importance, though but little is being done at 

 present toward its exiDloitation. 



E. 0. HOVEY, 

 Secretary. 



ANTHROPOLOGICAL SOCIETY OF WASHINGTON. 



The 347th meeting was held May 12. Dr. 

 J. Walter Fewkes, who recently returned from 

 the West Indies, gave a brief account of his 

 work in Porto Eico and Santo Domingo, re- 

 serving a fuller presentation till next meeting. 

 The paper of the evening was by Dr. E. A. 

 Spitzka, entitled ' Cerebral Characteristics of 

 Distinguished Men, with special reference to 

 the late Major J. W. Powell.' Following is 

 an abstract: 



Dr. Spitzka reviewed previous records of 

 brains of distinguished men and proceeded 

 to a consideration of their chief characteris- 

 tics, particularly the brain-weight and the 

 surface morphology — both generally and with 

 special reference to certain cortical areas. 

 Dr. Spitzka had tabulated the brain-weights 

 of ninety-seven men eminent in the profes- 

 sions, arts and sciences; compared with the 

 series of ' ordinary ' brain-weights collected 

 by Bischoff and Marchand, there was a rela- 

 tively and decidedly greater number of heavier 

 brains in the former series. In a further 

 analysis it was shown that the brains of men 

 devoted to the higher intellectual occupations, 

 such as the mathematical sciences, involving 

 the most complex mechanisms of the mind, 

 those of men who devised original lines of 

 research (Cuvier, Cope, Agassiz) and those 

 of forceful characters like Ben Butler or 

 Daniel Webster possess the heaviest brains. 

 The increase in brain-weight during evolu- 

 tionarjy progress is directly related to the 

 increase of cranial capacity along with the 

 development of brachycephaly. As for the 

 cerebral surface appearances, the highly in- 

 tellectual man is likely to exhibit not only a 

 superior degree of fissural and gyral com- 

 plexity in general, but of certain cortical 

 fields in particular. These differences in the 

 extent of certain cortical (especially the asso- 

 ciative) areas are palpable and measurable. 

 Particularly important in this relation is the 

 insula (Island of Eeil), probably the purest 



