To J. D. Hooker 4 May 
My dear Hooker
Sincere thanks for two most interesting notes.1 I was astounded at news about FitzRoy; but I ought not to have been, for I remember once thinking it likely; poor fellow his mind was quite out of balance once during our voyage.2 I never knew in my life so mixed a character. Always much to love & I once loved him sincerely; but so bad a temper & so given to take offence, that I gradually quite lost my love & wished only to keep out of contact with him. Twice he quarrelled bitterly with me, without any just provocation on my part.3 But certainly there was much noble & exalted in his character. Poor fellow his career is sadly closed. You know he was nephew to Ld. Castlereagh, & very like him in manners & appearance.—4
You will be glad to hear, I know my dear old friend, that my ten or 12 days of sickness has suddenly ceased, & has left me not much the worse: I feared it was the beginning of another six or nine months miserable attack & feared it much:5 Jenner has been here,6 & is evidently perplexed at my case; he struck me as a more able & sensible man, than he did before, for then I could not talk with him: I shall consult no one else.—7 Please tell me how I am to designate the edge of enclosed peach-stone (to be thrown away) which is marked with ink??8
I do not suppose you will care to hear, apropos to your Rafflesia but in Siebold’s “Parthenogenesis” of Bee p. 107, there are cases of the 2 sexes of the same Gall-insect being produced from different plants.—9
I have just received a paper from Häckel, which gives an astonishing case of propagation in a Medusa;10 it is exactly as if tadpoles were of two sexes & regularly laid eggs, but also produced by budding frogs, these likewise being of 2 sexes & laying eggs!
Very many thanks to you for writing to me about FitzRoy.— Poor fellow how kind he was to me at first during the voyage.—
I think I will write in 2 or 3 weeks to Masters about Caspary & Cytisus.—11 I am very glad to hear pretty good accounts of Sir William.12
Yours ever affectionately | C. Darwin
How charming Mad. Laugel must be!13
Do not answer till convenient about the edge of the peach-stone.
On FitzRoy’s life and character.
Carl von Siebold’s cases of males and females of gall insects [True parthenogenesis in moths and bees (1857)]. Each sex produced on different plants.
Haeckel’s astonishing case of propagation in a Medusa.