Ree. Ree. Berlin-March 18 

 Ans. 11 March 25 



Dyck March 10, 1857 



Your Wellborn?* s 



kind letter from Frankfurt ofFebruary 23 f and also the 2 steell 

 engravings I reeeived in order, the latter came out magnificently.lt 

 would be a pity, if the entire work could not be executed in the same 

 manner 1 At an untertaking supported by the State, there is less ei - 

 phasis on time than the perfection of the execution,, and I believe, 

 to recommend to you in the most urgent way to use the steel engra - 

 Vings. I had imagined the inf lorescence of M. macromerls entirely dif- 

 ferent. It is like that of the other Aulacothelae ; only the mamillae 

 seem to elongate, so that the older ones grow over the sulcris. M., 

 m acromerls is, by the way, not Mam.heteromorpha Schur.. I remember well!,, 

 having seen it (ks I say so on page 128), and it had the strongest simi- 

 larity with raphioacantha; it is, however, , quite certainiy^ = M.dacty - 

 lithele Labouret; who'se work carries some authority, , and with which! you 

 may wish to establish a synonymic agreement. The essay, which Seemann 

 will 1 dellver under the guidance of Mr. Scheer, remains certainly incd.nr - 

 plete. 



Your Wellborn continue to examine the seeds and t& find in their in- 

 terior useful characteristics: : I wonder, if the cotyledons contrariae 

 are so essentially dif ferent from the p.arallelis ( and, at the same 

 time so constant and uniformly dif ferent) »that a generic character» 

 and even a tribus could be based upon them ??I am eager to hear. -Iit 

 would be dear to me, to put the genus Melocactus next to Pilocereug». 

 The shape and outer appearance of the cacti is an indication of their 

 relationship; i.e. an indication of their inner strueture.. 



r arranged to have written to Mr. Westhof f; in order to introduce 

 with him everything properly. .He wants to reeeive; . already on the l6th 

 the shipment which is scheduled to be shipped on the 21st. I shalll thus- 



ship still this month 



unßrtunately forgot to ask you». 



