THE PHILIPPINE 
JOURNAL OF SCIENCE 
VoL. 20 MARCH, 1922 No. 3 
PHYSIOGRAPHY AND GEOLOGY OF SAMAR ISLAND, 
PHILIPPINE ISLANDS 
By Husert G. SCHENCK 
Of the Division of Mines, Bureau of Science, Manila 
FIVE PLATES AND THREE TEXT FIGURES 
CONTENTS 
INTRODUCTION. PHYSIOGRAPH Y—Continued. 
SUMMARY. Outcrops and topography. 
GENERAL STATEMENTS. Physiography and climate. 
Location. Physiography and vegetation. 
Shape and area. Physiographic influences. 
Coast. GEOLOGY. 
Roads. Petrography and geology. 
Maps. Historical geology. 
Cultivated areas. Economic geology. 
Climate. APPENDIX 1. TRANSLATION OF ROTH’S 
Field work. PAPER ON ROCKS OF SAMAR. 
Acknowledgments. AppEenprIx 2. Fossiu LOcALITIEs. 
PHYSIOGRAPHY. BIBLIOGRAPHY OF THE GEOLOGY OF SA- 
Relief and drainage. MAR, 
Nature of the topography. 
INTRODUCTION 
It was in 1521 that the navigator Magellan sighted a “rough, 
mountainous island called by the natives Zamal” and his find- 
ings were recorded. From time to time, since his day Samar has 
been lifted out of its obscurity by historical events or because 
of the occurrence of an earthquake or a typhoon of more than 
ordinary severity. For the most part, however, scientists seem 
to have passed the island by, rich though the field may prove 
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