Discusses depths at which ripple-marks appear on sea-floor.
Personal and social comment.
Mentions receiving Agassiz’s Lake Superior [1850].
Discusses depths at which ripple-marks appear on sea-floor.
Personal and social comment.
Mentions receiving Agassiz’s Lake Superior [1850].
CD is pleased with the drawings for Fossil Cirripedia but wants a few corrections which he would like very soon.
On Himalayan stratigraphy. Believes JDH’s observations of glacial action are the first ever done east of Urals.
Barnacles and the species theory; impressed with variation.
Effect of CD’s species sketch on JDH’s view of willow systematics.
Thanks LA for presentation copy of his book, Lake Superior [1850].
Comments on species of cirripedes sent by LA and A. A. Gould.
Asks him to send additional cirripede specimens.
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