Cagayan. The present figures were furnished me by Governor Antonio Carag on April 16, 1913. They represent only the supposed Negrito population of the eastern cordillera. There are other non-Christians in the province, but their number is not known.
Ilocos Norte. The census estimate is undoubtedly too low, but is nevertheless adopted, in fault of new and more reliable information.
Ifugao. No such political subdivision existed when the census was taken. This territory then formed a part of Nueva Vizcaya. A recent fairly accurate enumeration has shown the original estimate of the population of Nueva Vizcaya to be grossly in error.
Isabela. This province has lost a part of its non-Christian population to Ifugao and a part to Kalinga. There remain some Kalingas and numerous Negritos east of the Cagayan River, but I have no reasonably accurate estimate of their numbers. The figures given are probably too low.
Kalinga. This sub-province did not exist at the time of the census enumeration. The figures given are quite accurate.
La Union. This province has lost all of its non-Christian population by transfer to Benguet and Amburayan.
Lepanto. The figures now given for Lepanto are accurate.
Lepanto-Bontoc. Carried in the first column, but no entry made in the second because a direct comparison between the territory which was included in this province and the corresponding portions of the existing Mountain Province is not practicable.
Mindoro. No accurate count of the Mangyans of Mindoro has ever been made, but since the census enumeration the island has been crossed in a number of places and the estimate now given is believed to be reasonably conservative.
Misamis. This province has lost its non-Christian population to the sub-province of Bukidnon.