45® Seccnd Appendix. found'tufas fplit into regulär hexagonal pillars, fix or feven feet long. Mr. Strange difcovered granitic pillars in the Euganeon mountains, un- doubtedly formed in the fame mariner. Columnar porphyries have feveral times beeri obferved. Wc fliould therefore no longer wonder at leeing ba- faltic pillars formed by the fame accidents. 1 TI1IRD