Negritos of Eastern Luzon. 
907 
Map 3. 
I. Introduction. 
The report of my expedition to the Negritos of Apayaw (northern Mountain 
Province) and southwestern Cagayan in 1924, was published in “Anthropos” 
XX, 148—199 and 399—443. A few notes on the same subject appeared in 
“Festschrift P. W. Schmidt, S. V. D.”, pp. 760—763. The report of my findings 
among the Negritos of northwestern Cagayan (formerly a part of Apayaw) from 
1925 to 1928, pas published in “Anthropos” XXIV, 1—75, 897—911; XXV, 
25—71 and 527—565. Further notes on the same subject were published in 
“Anthropos” XXXI, 948—954. 
ITere follows the report of my expedition to the Negritos of the Sierra 
Madre, eastern Luzon, from February to June, 1936.