Pages [350-360]
CHAPTER XXVI
MAGNETIC ROCKS
Previous observations, [361].—Magnetic Polarity usually caused by atmospheric electricity, [362].—Displayed by both acid and basic rocks, [364].—Very frequent in Vanua Levu, [365].—Its relation to specific weight, [366].—The influence of locality, [367].—Frequently observed in mountain peaks, [367].—Description of the peaks, [368].—Measurement of the polarity of rocks, [370]
Pages [361-371]
CHAPTER XXVII
SOME CONCLUSIONS AND THEIR BEARINGS
Vanua Levu, a composite island formed during a long period of emergence, [372].—The submarine plateau probably produced by basaltic flows, [373].—The distribution of the volcanic rocks, [374].—Comparison with Iceland, [374].—The mountain-ridges, [375].—The emergence of the Fiji Islands, [376].—Wichmann’s view of the early continental condition not supported, [376].—Age and character of the emergence, [377].—The evidence of the Lau Group and of the Tongan Islands, [378].—Two principal stages of the emergence, [379].—Relative antiquity of the Hawaiian, Fijian, and Tongan Islands as indicated by their floras, [379].—Islands have always been islands, [380].—The hypothesis of a Pacific continent not yet needed, [381].—The great dilemma, [381].—Much remains to be learned of the possibilities of means of dispersal in the past and in the present, [382]
Pages [372-382]
APPENDIX.