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And a gold yellow drop of natrolite From the dark stone oft comes peeping; Those are the tears which Sir Bas�lt For his crushed love ever is weeping.

Stilbite is characterized by its form, difficult gelatinizing, and intumescence before the blowpipe; from natrolite as mentioned under that species.

Pectolite sometimes resembles some of the others, but may be readily distinguished by its tough long fibers, not brittle like natrolite.

This natrolite is a grouping of very small but perfect crystals, having the forms shown in Fig.

The bed holding the upright crystals is also natrolite in confused matted masses.