The triphthongs herein expressed by tsha and nya are used in words of Malay origin, and are represented by single characters in Malay and Magindanao. In many cases when u precedes w and i precedes y the natives omit the u and the i, and the same word may be written either with or without the u or the i. When written they are pronounced very short; u at the beginning of a word, as in undu, unggu, is often omitted both in pronunciation and in writing. Such words may be written ndu and nggu. To write Magindanao words by means of Arabic characters correctly a certain knowledge of Arabic grammar and orthography is necessary. The Moros lack that knowledge and write very inaccurately and inconsistently. They neither punctuate nor use the accent sign. In transliterating these tarsila that pronunciation which seemed consistent and characteristic of each tarsila was adopted in the transliteration of the same. The text is punctuated. The accent sign is used very frequently. It is generally omitted when the accent is upon the first syllable in words of two syllables and when it is upon the syllable containing the long vowel. Some stress should be put on the last syllable as a rule. The Magindanao tongue is energetic and strong. Its pronunciation is generally forcible, the last syllable being spoken abruptly and with a certain amount of stress. The word Mohammed is written with o in spite of the fact that it is pronounced with u sound in both Arabic and Magindanao. The combinations ay, ay, aw, aw are not diphthongs, but simple syllables. The y and w in these cases and in all cases where they precede a vowel have pure and distinct consonantal sounds. A GEOGRAPHICAL SKETCH OF THE CHIEF MORO SETTLEMENTS MENTIONED IN THE TARSILA OF MINDANAO