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?
C.D.—Memory very bad for dates, and for learning by rote; but good in retaining a general or vague recollection of many facts. R.D.—Wonderful memory for dates. In old age he told a person, reading aloud to him a book only read in youth, the passages which were coming—knew the birthdays and death, etc., of all friends and acquaintances.
STUDIOUSNESS?
C.D.—Very studious, but not large acquirements. R.D.—Not very studious or mentally receptive, except for facts in conversation—great collector of anecdotes.