8); and allow me to name my work with thy name, which is glorified and greatly revered by Thy servant, Naphtali Hallevi [i.e.the Levite].
Dated here in the city of Radom, in the province of Poland, in the month of Nisan in the year 636, according to the lesser computation (i.e.A.M.
[5]636 = A.D.

1876).
LETTER 278.

TO OTTO ZACHARIAS.

1877.
When I was on board the "Beagle" I believed in the permanence of species, but, as far as I can remember, vague doubts occasionally flitted across my mind.

On my return home in the autumn of 1836 I immediately began to prepare my journal for publication, and then saw how many facts indicated the common descent of species (278/1.