1. The standard of seedling grading of Pterocarpus indicus was studied by using the methods of gradual cluster analysis.

2. A reddish resin obtained from several Old World trees of the genera Eucalyptus, Pterocarpus, and Butea and from tropical American trees of the genera Coccoloba and Dipteryx.

3. The method for preparing the extracting liquid solution of the pterocarpus santalinus is simple and easy, low in cost and good in stability.

4. Objective To investigate the analgesic effect of saponin of Pterocarpus Indicus(SPI).

5. Any of various tropical or semitropical leguminous trees of the genera Tipuana, Pterocarpus, or Dalbergia, having hard reddish or dark wood with a strongly marked grain.