"If you attend at all to Natural History I send you this P.S. as a memento, that I continue to collect all kinds of facts about 'Varieties and Species,' for my some-day work to be so entitled; the smallest contributions thankfully accepted; descriptions of offspring of all crosses between all domestic birds and animals, dogs, cats, etc., etc., very valuable. Don't forget, if your half-bred African cat should die that I should be very much obliged for its carcase sent up in a little hamper for the skeleton; it, or any cross-bred pigeons, fowl, duck, etc., etc., will be more acceptable than the finest haunch of venison, or the finest turtle." Later in the year (September) he writes to Fox about his health, and also with reference to his plan of moving into the country:-- "I have steadily been gaining ground, and really believe now I shall some day be quite strong. I write daily for a couple of hours on my Coral volume, and take a little walk or ride every day. I grow very tired in the evenings, and am not able to go out at that time, or hardly to receive my nearest relations; but my life ceases to be burdensome now that I can do something. We are taking steps to leave London, and live about twenty miles from it on some railway."] 1842. [The record of work includes his volume on 'Coral Reefs' (A notice of the Coral Reef work appeared in the Geograph. Soc. Journal, xii., page 115.), the manuscript of which was at last sent to the printers in January of this year, and the last proof corrected in May. He thus writes of the work in his diary:-- "I commenced this work three years and seven months ago. Out of this period about twenty months (besides work during "Beagle's" voyage) has been spent on it, and besides it, I have only compiled the Bird part of Zoology; Appendix to Journal, paper on Boulders, and corrected papers on Glen Roy and earthquakes, reading on species, and rest all lost by illness." In May and June he was at Shrewsbury and Maer, whence he went on to make the little tour in Wales, of which he spoke in his 'Recollections,' and of which the results were published as "Notes on the effects produced by the ancient glaciers of Caernarvonshire, and on the Boulders transported by floating Ice." ('Philosophical Magazine,' 1842, page 352.) Mr. Archibald Geikie speaks of this paper as standing "almost at the top of the long list of English contributions to the history of the Ice Age." (Charles Darwin, 'Nature' Series, page 23.) The latter part of this year belongs to the period including the settlement at Down, and is therefore dealt with in another chapter.] CHAPTER 1.VIII. -- RELIGION. [The history of this part of my father's life may justly include some mention of his religious views. For although, as he points out, he did not give continuous systematic thought to religious questions, yet we know from his own words that about this time (1836-39) the subject was much before his mind.]