Part Ii: From the Commercial Standpoint

THE TRUE LIGNUM-VITAE OF COMMERCE

General Considerations 21 Present Sources of Supply 22 Future Sources of Supply 26 Value of Lignum-vitae Imports from 1900 to 1919 28 Uses of Lignum-vitae 28 Resin of Guaiacum: Its Properties and Uses 35

SUBSTITUTES FOR TRUE LIGNUM-VITAE

Woods of the Lignum-vitae Family 38 Woods of Other Families 39

SUMMARY AND CONCLUSIONS 44

REFERENCES 45 PLATES 49

LIGNUM-VITAE

A STUDY OF THE WOODS OF THE ZYGOPHYLLACEAE WITH REFERENCE TO THE TRUE LIGNUM-VITAE OF COMMERCE--ITS SOURCES, PROPERTIES, USES, AND SUBSTITUTES

BY SAMUEL J. RECORD Professor of Forest Products, Yale University