Ree •.Nov. 20,18^9 

 Ans. Feb. 15 I850 



Dyck Oct. 13,1849 



Your Wellborn 



I reeeived your letter of Antust 18 this moment, and I 

 shall not miss a second, to teil you, how very gl ad I an to know» 

 that you are well, and that none of the misf ortimes, which have 

 Hit St. Louis, has hanner' you., The fortune of doctors in America 

 as well as in Europe has been a sad one» * The unoertainty of the 

 help, which you could provide on the one ei de, and the dangei* to 

 become sick your seif on the other , have brouprht nany a doctor 

 here to d.i straction. , In Colo^ne and Dnsseidorf cholera is still 

 ranpant: in the country, though, orly Single appearances of the 

 sicfyness occured, and in the lange eitles like London and Paris 

 (where the sickness was supposed to be less virulent this time 

 and perhaps better known) nore victims perhaps have fallen than 

 during the first appearan.ee. Ehrenberg sees insects in the air 

 and in the water'; others mJLcrokogysten (? E.D. ), in England t^ey 

 see sporulae of unknowrr cryptogamae I One is supposed to have ob- 

 served, that the swallows leave the places, where cholera ruUes 

 stronsrly ! The sickness will disannear before one can give a reasorr 

 f or it; or how ife ever came« 



I had more sample s than Your Wellborn, and have really pro- 

 gressed so far in ny labor, that 1 can proeeed to printing. I am 

 fini.shin.fir the last touches, and your letter cane just in. time to 

 be used . As the title renains always "Cacti in N.Dyck Culture" 

 I can hardly bring in. plant s, which I do not posess. The dead ones,, 

 I included, as they could have remained alive, and one can rely on 

 theit sceletons». As you give ne now hope to reeeive C .viridiflo - 

 rus, I shall not hesitate to include it as if I had. it already.. 

 Another development however gave ne nuch trouble, and led to a 

 test, if ny System of tribus would stand up.. 



