20 Weiss, Phloem of LepidopIUoios and Lepidodendron. 



has been described in this communication. (Hick Collec- 

 tion No. 67). The character of this outer secretory zone is 

 very distinct and different from the tissues I have described 

 as phloem. These latter are much more in agreement 

 with the tissues of a normal phloem, so that we can, I 

 think, agree with the statement made by Dr. Scott^ in his 

 recently published Shidies in Fossil Botany, that we are 

 not justified in supposing that there was any fundamental 

 difference in the structure of the phloem between the 

 Lepidodendra and their recent allies. 



Scott, D. H. Studies in Fossil Botany. 1900. p. 142 and 143. 



