Notebook No.160, September 1849 - January 1850

Index entry that appears in Index Book A5/5 (was A5/3) 1860:
Peat, says Forchammer, not formed if mean temperature below 43 & 44 Fa[hrenheit]. Frost causes vegetable (brown) matter to be precipitated. see more page 1, 2
p.17 The Bilin fossils are vegetable, Mantell.
p.18 In conception earthquake waves throw up large slabs wh[ich] in subsiding coast may travel up hill.
p.22 Darwin thinks 100 f[ee]t thickness of chalk may have been dissolved by rain & may have left unrolled flints.
p.24 Rocks 15 fath[o]ms deep not worn by waves off T. del Fuego - covered by sea weeds -
p.26 Mud in English channel 80 fath[o]ms deep disturbed, says Martin White.