Climate and Time in Their Geological Relations / A Theory of Secular Changes of the Earth's Climate

by James Croll

[162] Report on the Geology of the District of Ballan, Victoria. 1866. p. 11.

[163] Atrypa reticularis.

[164] Quart. Journ. Geol. Soc., vol. xii., p. 58.

[165] “Great Ice Age,” p. 513.

[166] “Great Ice Age,” p. 513.

[167] Brit. Assoc. Report for 1873.

[168] Quart. Journ. Geol. Soc., vol. xi., p. 519.

[169] Orthis resupinata.

[170] Prod. semireticulatus var. Martini. Sow.

[171] “Belcher’s Voyage,” vol. ii., p. 377.