176 FIRST JOURNEY IN EUROPE. [1839, 



a series of drawings and engravings on which he has 

 been long engaged, for a memoire on the structure of 

 roots, splendid drawings ; and he explained to me 

 what I before could not form a clear idea about, how 

 the curious emboitemeiit or thickening of the walls of 

 cells takes place by the development of new cells 

 within the old. He showed me what I at once recog- 

 nized as the so-called gridiron-tissue which I had seen 

 in England, and I noticed that he explained it in the 

 same way as Brown. He promised me copies for self 

 and friends of the late paper of his on Embryologia 

 in the " Comptes Rendus," just now read before the 

 Institute (which will also be published with a part of 

 the plates in the " Annales des Sciences Naturelles " 

 and finally completely in "Archives du Museum "), in 

 which he says he has completely upset the new-fangled 

 notions of Schleiden, Unger, etc. (adopted by End* 

 licher) ; and, what is remarkable, his investigations on 

 the subject were made before he knew of their views, 

 and the publication is only a little hastened on account 

 of theirs. This evening I have been with Webb, look- 

 ing up Desfontaines and Poiret plants, also some of 

 Spach. Did I tell you I have seen a good deal of 

 Spach of late ? He does not agree well with the other 

 botanists of the Garden, but there are some good 

 points about him, and he is mending every day. I 

 pushed him rather hard upon some of his bad ways, 

 particularly that of his changing specific names, which 

 he bore very well. Webb says he is now falling into 

 an opposite extreme as to species, and will hardly ad- 

 mit anything to be distinct ; but Webb himself rather 

 inclines to multiply species, I believe. I am to meet 

 Spach at his place in the Garden to-morrow morning. 

 He is married, lately, to Miss Legendre, a relative of 



