[172]

I presume thinks infusoria part of pumice, but the last sentence p. 14) wd lead me to think, from speaking in line having been used as a flux that the calcareous matter was used in melting the infusoria

Conclusion

p. 19 {one of the largest formations par formed of through the influence of life.

p 19 Bahia Blanca paragraph mistranslated (I think) must mean highest tide // Undoubtedly L'Institut has falsely translated that.

[172v]

Patagonia ─ white Earth ─

─ 30 Infusoria ─

─ Infusoria heated, bent & broken ─ = green crystal like augite =

Speaks in first part as only here & there infusoria

New Bay infusoria very few

Most extensively sea-water forms, & oceanic = several forms are new & quite peculiar*

[in margin:] 7 Infusoria

{sea-sponge needles cannot have get crept into tuft-mass ─ {Polythalmic & other chalk-beats entering fail = age of Deposit? = from proportion of recent infusoria because pumice might be old

Has now through in them ↘

[South America, pp. 121-22: "The tuffs are pale-coloured, alternating with laminated mudstones and sandstones (all easily fusible), and passing, sometimes into fine-grained white beds strikingly resembling the great upper infusorial deposit of Patagonia, and sometimes into brecciolas with pieces of pumice in the last stage of decay; these again pass into ordinary coarse breccias and conglomerates of hard rocks."]