[On May 28th he sent the following answers to the questions that Mr. Galton was at that time addressing to various scientific men, in the course of the inquiry which is given in his 'English Men of Science, their Nature and Nurture,' 1874. With regard to the questions my father wrote, "I have filled up the answers as well as I could, but it is simply impossible for me to estimate the degrees." For the sake of convenience, the questions and answers relating to "Nurture" are made to precede those on "Nature": NURTURE. EDUCATION? How taught? I consider that all I have learnt of any value has been sel-taught. Conducive to or restrictive of habits of observation? Restrictive of observation, being almost entirely classical. Conducive to health or otherwise? Yes. Peculiar merits? None whatever. Chief omissions? No mathematics or modern languages, nor any habits of observation or reasoning. RELIGION. Has the religious creed taught in your youth had any deterrent effect on the freedom of your researches? No. SCIENTIFIC TASTES. Do your scientific tastes appear to have been innate? Certainly innate. Were they determined by any and what events? My innate taste for natural history strongly confirmed and directed by the voyage in the "Beagle". NATURE. Specify any interests that have been very actively pursued. Science, and field sports to a passionate degree during youth. (C.D. = CHARLES DARWIN, R.D. = ROBERT DARWIN, his father.) RELIGION? C.D.--Nominally to Church of England. R.D.--Nominally to Church of England. POLITICS? C.D.--Liberal or Radical. R.D.--Liberal. HEALTH? C.D.--Good when young--bad for last 33 years. R.D.--Good throughout life, except from gout. HEIGHT, ETC? C.D.--6ft. Figure, etc.?--Spare, whilst young rather stout. Measurement round inside of hat?--22 1/4 in. Colour of Hair?--Brown. Complexion?--Rather sallow. R.D.--6ft. 2 in. Figure, etc?--Very broad and corpulent. Colour of hair? --Brown. Complexion?--Ruddy. TEMPERAMENT? C.D.--Somewhat nervous. R.D.--Sanguine. ENERGY OF BODY, ETC.? C.D.--Energy shown by much activity, and whilst I had health, power of resisting fatigue. I and one other man were alone able to fetch water for a large party of officers and sailors utterly prostrated. Some of my expeditions in S. America were adventurous. An early riser in the morning. R.D.--Great power of endurance although feeling much fatigue, as after consultations after long journeys; very active--not restless--very early riser, no travels. My father said his father suffered much from sense of fatigue, that he worked very hard. ENERGY OF MIND, ETC.? C.D.--Shown by rigorous and long-continued work on same subject, as 20 years on the 'Origin of Species,' and 9 years on 'Cirripedia.' R.D.--Habitually very active mind--shown in conversation with a succession of people during the whole day. MEMORY?