X1V ACKNOWLEDGMENTS 
Pedro Vasques, my majordomo, cook, interpreter, guide, friend 
Messrs. R. 8. Shepherd and J. M. Howell of the Puno Adventist Mission, 
authors of many favors, introductions, ete. 
Sr. Francisco P. Valearcel, who made my collecting at Lake Umayo pleasant 
and profitable at the family estate, Hatun Colla 
Mr. Nathaniel G. Grundy who was my host and guide at his mining estab- 
lishment, Maravillas on the R. de Lampa 
Don Daniel 8. Bustamante, Minister of Public Instruction and Agriculture, 
La Paz, who opened to me the official resources of his department of government 
Sr. M. V. Balliviin, scholar and scientist, who interested the above in my 
enterprise 
Sr. Jorge R. Cornejo V., engineer of the tin mines and smelter, Poopd, who 
was my host, guide, and counsellor 
Dr. A. Gieseke, Cuzco, now of Lima, Rector of the University of Cuzco, 
patron of all scientific enterprises visiting Peru 
Mr. Lycett, Cebollar, Chile, superintendent of the B.C.C., who personally 
conducted me to the fish haunts of Lake Ascotan 
Sr. Ricardo A. Espinosa, Director de Gobierno, Lima; Sr. Enrique Lagarre, 
Director of Fomento, Lima; Sr. Antonio Cashof, Minister of War; various members 
of the Foreign Office, including the Minister, all of whom provided me with in- 
dispensible letters of introduction to their subordinates in the interior 
Dr. Carlos Rospigliosi y Vigil, Colonel of the Medical staff of the Peruvian 
Army, member of the staff of the Military Hospital at Lima, Professor of Zoology, 
University of San Marcos, Director of its Museum, who made representations 
before the government departments in my behalf 
Don César Ruiz y Pastor, Prefect of the Dept. of Loreto, who made avail- 
able many resources of his inland provinces 
Sefiores Valle Riestra, Perené Colony; H. F. Bardalez Hernandez, Iquitos; 
Julio A. Battistini, Hda. Ytalia, Rio Ucayali; Sr. Medina, Hda. Bretafa, 
R. Puinagua, were my hosts for periods of varying length 
Capt. Manuel Curiel, Oficial de Cavalleria, Comandante of the Military Dis- 
trict of the Lower Ucayali, gave me the advantage of his knowledge of Indian 
affairs and his patronship of the indigenous tribes, in procuring assistance 
The Brothers Juan and Ecuador Praeli of Tarma and La Merced lent assist- 
ance in fishing, in equipment, and in establishing the necessary credits for travel 
in the interior 
Mr. W. J. Dennis, then of the Methodist Mission School, Huancayo, gave 
very material assistance in obtaining supplies of the fish poison, cubé 
Mr. Francis A. Mitchell, Americo-Peruvian, Yurimaguas, gave much help 
in obtaining necessary facilities for work there 
Percival Morris, Barbado-Peruvian, was my aide during the weeks spent at 
Iquitos, and did collecting according to my instructions for a year after my visit 
Senhora Snethlage, Curator of the Natural History Museum, Para, Brazil, 
obligingly forwarded mail and cablegrams sent in her care 
