Cut, lanced, etc, in short treated in every respect secundum legem artis.  In spite of that the thing is continually breaking out again so that, with the exception of two or three days, I have been lying quite fallow for eight weeks. Last Saturday I went out again for the first time Monday another relapse. I hope that it will finish this week, but who will guarantee me against new eruptions? It is extremely disagreeable. Moreover it attacks my head. My friend, Dr Gumpert  in Manchester, urges me to use arsenic. What do you think of it? Your Koppel is not yet here. Kertbeny  is a German-Hungarian whose real name, between ourselves, is Benkert. The German-Hungarians love to Magyarise their names. I do not know him personally. Since he had a quarrel with Vogt  about 1860, I asked him for some notes but received nothing of any use. (My Hungarian material was obtained partly from Szemere,  partly from my own experience in London.) Later he applied to me in a quarrel he had with Kossuth.  As far as I have been able to learn, there is nothing politically suspicious against him. He seems to be a literary busybody. His heresies with regard to Bonaparte are held by many otherwise honest eastern barbarians in any case watch him. I also consider it more diplomatic not to show any mistrust of him (and for that reason I am enclosing the biographical notice  which he requested). Nevertheless, as soon as the writing position no longer troubles me, I shall order information about him from other sources. You guessed rightly about Plagiarismus.  I was intentionally uncivil and hair-raising in order to make Hofstetten  suspect Liebknecht and to conceal my authorship. This between ourselves. You probably know that Engels and Siebel  have got articles about my book published in the Barmen-Zeitung, Elberfelder Zeitung, Frankfurt B rsen-Zeitung and to the great grief of Heinrich B rgers in the D sseldorf-Zeitung.  Siebel was the man in Barmen whose acquaintance I wanted you to make. He is now in Madeira for his health. Last week the Saturday Review the blood and culture paper had a notice about my book in a review of recent German books. I have come off pretty well, as you will see from the following passage: Ouff! My best greetings to your dear wife and Fr nzchen. You will get other photographs from here, for we have now discovered that the water colours which looked good the first day dissolved in patches immediately after. Write to me as often as your time permits. During my illness and the many occasions for vexation, letters from friends are very welcome.
Marx-Engels Correspondence 1866