To Adam Sedgwick 3 November 1843

My dear Sedgwick

Thanks for Whewell's wonderful portrait. Leonard pulled out four specimens of Whales' ears from his private store last Monday (when he happened to be here) & one of them I think a decidedly fourth species & possibly another is a fifth. At all events I believe there are 2 genera each containing two species - & a note from Owen to whom I have sent them appears to confirm this view. We spoke of a name for them. He suggests "Otocetes or Otocetites" or "Cetotolithes". I presume the latter wd be the more correct for "Whales-earstone" - the former would be "Eared-Whale-Stone". Let me know - as Mr Deck has the mould for casts of 2 of them & is anxious about a label for them - which I promised to supply. I hope you got a wonderful pamphlet I sent you about Roman remains. I was not aware that Mantell had determined the Green sandstone nodules to be animal matter - but be assured it is the case with the Red Crag nodules as I hope to show you to your satisfaction.

Ever Yrs truly/

J .S. Henslow