16 PROCEEDINGS OF THE CHICAGO MEETING 



Robert Browning Sosman, B. Sc, S. B., Ph. D., Physicist, Geophj^sical Labora- 

 tory, Wasliington, D. C. 



John Littlefield Tii.ton, B. A., M. A., West Virginia University, Morgautown, 

 West Virginia. 



Bruce Wade, B. S., M. S., Ph. D., Assistant State Geologist, State Geological 

 Survey, Na.shville, Tennessee. 



Herbert Percy Whitlock, O. E., Curator of Mineralogy, American Museum of 

 Natural History, Nevf York City. 



CHANGES IN PUBLICATION RULES 



Announcement was made that Council had changed Publication Rule 

 Ko. 17 to read: "Authors may be charged for alterations ('authors' cor- 

 rections') amounting to more than ten per cent of the original cost of 

 composition and presswork of their papers"; and had changed Publica- 

 tion Rule No. 19 to read : "Authors of papers of more than four printed 

 pages in length shall receive 10 reprints gratis." 



SUPPORT OF THE GEOLOGICAL MAGAZINE 



The Secretary reported that Council had voted to continue for the year 

 1921 its guarantee of forty subscriptions to the Geological Magazine of 

 London, England, in order to assist in maintaining that time-honored 

 periodical. 



NECROLOGY 



The President announced that the Society had lost but one Fellow 

 during the year 1920, Joseph P. Iddings, and he called upon Henry S. 

 Washington for an oral tribute to the deceased. 



MEMORIAL OF JOAQUIM CANDIDO DA COSTA SENA 

 BY JOHN C. BRANNER 



Dr. J. C. da Costa Sena was born in the city of Conceicao do Serro, 

 State of Minas Geraes, Brazil, August 13, 1852, and died at Bello Hori- 

 zonte, in the same State, June 20, 1919. His early education was re- 

 ceived at the Lazarist College, at Caraga, in the State of Minas. On tlie 

 completion of his preparatory studies he entered the Escola Polytechnica, 

 in Rio de Janeiro, but later transferred to the Escola de Minas, which 

 had lately been established at Ouro Preto, and at which he graduated in 

 1880. 



The School of Mines had been established by the Imperial Government 

 of Brazil in 1875, at the famous old city of Ouro Preto, formerly known 

 as Villa Rica. I can not do better than to quote from what I have said 

 elsewhere of the institution : 



