NIX 
of the Secretary, Mr. Moreira from the mines of Rio Grande do Sul, and 
Santa Catharina. An accomplished linguist, speaking and writing English, 
French, German, and Portuguese with equal fluency, Mr. Moreira’s 
services proved of great value to the Commission in general, and to 
the chief in particular. 
Also to Dr. Oliveira, who looked so carefully after the material 
comforts of the Commission in both field and camp, and whose long 
experience in the study of Brazilian geology proved of great value to 
the Commission, the chief is greatly indebted. In fact, the writer cannot 
too highly commend the aid and assistance given the chief by every 
member of the Commission. In this connection, the practical and va- 
luable services of Sr. José Pio da Silva, one of the employees of the 
Commission, must be acknowledged. 
The number of Brazilian people to whom the Commission is in- 
debited for kindly assistance and interest in its work is so large that 
no attempt can be made to name them all. However, the Commisson 
is so greatly indebted to the following persons that this public acknowl- 
edgment must be made; namely. 
Dr. Ramiro Barcellos, the distinguished Senator of Rio Grande do 
Sul, who did so much to expedite the work of the Commission by his 
active leadership in the field. 
His Excellency, Dr. Borges Medeiros, the President of the State 
of Rio Grande do Sul, who so generously placed the resources of his 
great Commonwealth at the disposal of the Commission. 
His Excellency, Colonel Vidal Ramos, the Governor of the State of 
Santa Catharina, and his able successor, Colonel Pereira de Oliveira, both 
of whom took great interest in the work of the Commission, and aided it 
in.many ways. 
His Excellency, Dr. Vicente Machado, the President of the State of 
Parana, who rendered the Commission valuable services. 
His Excellency, Dr. Jorge Tibirica, the President of the State of Sao 
Paulo, who in connection with his able Secretary of Agriculture, Dr. 
Carlos Botelho, and Dr. Arthur A. de Oliveira Borges, Inspector of Rail- 
ways, rendered the Commission very valuable services. 
His Excellency, Dr. José Marcellino de Souza, the Governor of the 
State of Bahia, and his distinguished Secretary of Agriculture, Dr. Miguel 
Calmon du Pine Almeida, who did so much to render the visit of the 
Commission to Maraht: both pleasant and expeditious. . 
To Dr. Orville A. Derby, the distinguished ex-chief of the Geogra- 
