[The greater number of the following letters are addressed by my father to his cousin, William Darwin Fox. Mr. Fox's relationship to my father is shown in the pedigree given in Chapter I. The degree of kinship appears to have remained a problem to my father, as he signs himself in one letter "cousin/n to the power 2." Their friendship was, in fact, due to their being undergraduates together. My father's letters show clearly enough how genuine the friendship was. In after years, distance, large families, and ill-health on both sides, checked the intercourse; but a warm feeling of friendship remained. The correspondence was never quite dropped and continued till Mr. Fox's death in 1880. Mr. Fox took orders, and worked as a country clergyman until forced by ill-health to leave his living in Delamare Forest. His love of natural history remained strong, and he became a skilled fancier of many kinds of birds, etc. The index to 'Animals and Plants,' and my father's later correspondence, show how much help he received from his old College friend.] CHARLES DARWIN TO J.M. HERBERT. Saturday Evening [September 14, 1828]. (The postmark being Derby seems to show that the letter was written from his cousin, W.D. Fox's house, Osmaston, near Derby.) My dear old Cherbury, I am about to fulfil my promise of writing to you, but I am sorry to add there is a very selfish motive at the bottom. I am going to ask you a great favour, and you cannot imagine how much you will oblige me by procuring some more specimens of some insects which I dare say I can describe. In the first place, I must inform you that I have taken some of the rarest of the British Insects, and their being found near Barmouth, is quite unknown to the Entomological world: I think I shall write and inform some of the crack entomologists.