A spring day, foggy and drizzly. Attended Divine service at the Chapel. Mr Martineau preached from the text, “make to yourselves friends of the mammon of unrighteousness.” To explain this he went far back into the history of the Roman rule of Judæa, and traced this advice to the wish of Jesus to reconcile the Jews to the requisition of persons whom their religious prejudices closed as unworthy of any consideration. I thought the construction farfetched. Mrs Adams and I then called on Sir Charles and Lady Lyell. They are the best disposed people to America that I find here. Walk with Mary to the Zoological garden, where the vegetation looks fresh and springlike. Read an excellent sermon of Dr Walker on the notion not uncommon in certain quarters, that the Christian faith is a thing of the past, and has lost its efficacy. Nonsense enough to merit the exposure the Dr makes of it.