 On 25 December their father received a letter from Henslow which said that Darwin would become one of the premier naturalists of the time, and enclosed some copies of a book of extracts of Darwin's letters on South American geology which had been printed for private distribution.Their father "did not move from his seat till he had read every word of "your" book & he was very much gratified – he liked so much the simple clear way you gave your information".Darwin was horrified that his careless words were in print, but "No hay remedio" (it can't be helped).