i86S -1881] VOCHTING 429 



I procured some rime .1 ur Organbildung* etc., but it Letter 759 



was too late for me to profit by it for my book, as I • 

 correcting the press. I read only pari . but my son Francis 

 read the whole with care and told me much about it, which 

 greatly interested me. 1 also read your article in the ju>t. 

 Zeitung. My son began at once experimenting, to test your 

 views, and this very night will read a paper before the 

 Linnean Society on the roots of Rubus* and I think that 

 you will be pleased to find how well his conclusions agree 

 with yours. Me will of course send you a copy of his paper 

 when it is printed. I have sent him your letter, which will 

 please him if he agrees with me ; for your letter has given me 

 real pleasure, and I did not at all know what the many great 

 physiologists of German}-, Switzerland, and Holland would 

 think of it [The Power of Movement, etc.]. 1 was quite 

 sorry to read Sachs' views about root-forming matter, etc., 

 for 1 have an unbounded admiration for Sachs. In this 

 country we are dreadfully behind in Physiological Botany. 



To A. 1 )e Candolle. Letter 760 



! town, Jan. 24th, 1SS1. 



It was extremely kind of you to write me so long and 

 valuable a letter, the whole of which deserves careful con- 

 sideration. I have been particularly pie ised at what you say 

 about the new terms used, because I have often been annoyed 

 at the multitude of new terms lately invented in all brancrn 

 of Biology in Germany; and I doubted much whether I was 

 not quite as great a sinner as those whom 1 have blamed. 

 When I read your remarks on the word "purpose" in your 

 Phytographie % I vowed that 1 would not use it again ; but it is 

 not easy to cure oneself of a vicious habit. It is also difficult 

 for any one who trit ^ to make out the use of a structure to 

 avoid the word purpose. 1 sec that 1 have probably gone 

 beyond my depth in discussing plurifoliate and unifoliate 

 leaves; but in such a dse as that of Mimosa albida, where 



1 Organbildung im Pflan ~S. 



' Francis Darwin, "The Theory of the Growth o\ Cuttings" {/.inn. 

 Soe. /ourn.f XVIII.). [I take this opportunity of expressing my u 

 that at p. 417, owing to neglect of part of Vochting's facts, I mad 

 criticism of his argument which cannot be upheld. — F. D.]. 



