“The use of the natural sciences in the elucidation of prehistoric life and behavior has been an advantage to the discipline of archaeology in the last fifty years. This book is arguably the first in the study of Philippine prehistory in specifically exploring and understanding the prehistoric diet of our ancestors. This is the first of its kind where stable isotopic analyses were applied on human bones, hair and teeth in deciphering ancient food and the source of drinking water in prehistoric times. The results from this highly technical research work will go a long way in the elucidation of the rich archaeological heritage of the Philippines.” — Wilfredo P. Ronquillo, Chief, Archaeology Division, National Museum of the Philippines