Some of these genera are mentioned by Darwin ("Geol.

Obs." page 181) as having been named for him by M.D'Orbigny.) will be able to give a guess, to what grand division of the formations of Europe these organic remains bear most resemblance.

They are exceedingly imperfect and few.

It was late in the season and the situation particularly dangerous for snow-storms.

I did not dare to delay, otherwise a grand harvest might have been reaped.