862 
So far as we at present know, the Ilongotes have but a single dialect, 
but it is probable that those of northern Tayabas speak a different dialect 
from those of Nueva Vizcaya. 
The Ifugaos should be divided into numerous dialect groups. 
In the absence of Lietuenant Case, who has lived among them for years, 
I have no information to add to that gathered by Dr. Barrows and there- 
fore provisionally adopt his conclusions as to the number of such groups 
which should be recognized. 
As yet we know very little as to the language of the Kalingas. The 
people known as Dadayags and Oalauas are said to have peculiar dialects, 
as are also the Catalanganes. 
I have not sufficient information relative to the dialects spoken by 
the Bontoc Igorots to be able to form any conclusions as to the subdivi- 
sions of this tribe. 
The two important dialects of the Benguet-Lepanto Igorots are Na- 
balot, spoken in central and southern Benguet, and Kankanat, spoken in 
eastern and northern Benguet, in Amburayan, and in southern Lepanto. 
There is, it is said, another dialect: called Kataugnan, spoken by the 
Igorots of central and northern Lepanto. 
So far as concerns the 7'ingians, it may prove that the people of Apayao 
form a dialect group and that those in the region of Guinaan, Balatoc, 
and Balbalasan can be differentiated on account of peculiarities of speech, 
but more work needs to be done before definite and satisfactory conclusions 
on this subject can be reached. 
ORIGIN OF THE NON-CHRISTIAN TRIBES OF NORTHERN 
LUZON. 
I agree with the conclusion reached by Dr. Barrows that the only races 
to which we need give consideration in accounting for the origin of the 
tribes under discussion are the Negrito race and the Malay race. Pos- 
sibly an exception should be made in the case of the Kalingas, many of 
whom have eyes which are decidedly suggestive of Chinese or Japanese 
origin, but there is no direct evidence that central or northern Luzon 
has ever been occupied by Chinese in large numbers, and if such occupa- 
tion really occurred, a study of the language of the Kalingas should 
show affinities with Chinese. 
The ibilaos are the only northern Luzon people who have intermar- 
ried extensively with the Negritos, and in my opinion the influence of 
Negrito blood may be left out of account in considering the origin of the 
other tribes. ; 
The Tingians differ physically in important particulars from the other 
northern Luzon tribes and seem to have much in common with the 
Mangyans of Mindoro and the Dyaks of Borneo, but there is no evidence 
that they have had other than a Malay origin. 
