Structure of the Leaves of Catamites. 179 



On the Structure of the Leaves of Catamites. By Thomas 

 Hick, B.A., B.Sc, A.L.S., Assistant Lecturer in 

 Botany, the Owens College, Manchester. Com- 

 municated by F. E. Weiss, B.Sc, Professor of 

 Botany at the Owens College. 



{Received April joth, 1895.] 



Introduction. 



The accounts hitherto published of the leaves of 

 Catamites are almost exclusively confined to their form, size, 

 arrangement on the stem, and other external characters, 

 and have little or nothing to say with regard to the internal 

 structure. Even in the well-known Memoirs* of William- 

 son, the histology of the leaves in not brought under 

 consideration, and the same may be said of the Memoir\ 

 recently published by him and Dr. Scott, in which further 

 observations on the organisation and development of 

 Catamites are recorded. 



On the other hand, the anatomy of the root, the stem, 

 and the fruits of Catamites has been worked out with much 

 detail, and were it not for the lack of knowledge with 

 respect to the structure of the leaves, we should be able to 

 form a tolerably correct and complete conception of the 

 whole organisation of these interesting plants. 



To bridge over this gap in our knowledge, at least in 

 part, is the object of the present communication. In a 

 sense, it is the outcome and continuation of the paper " On 

 the Primary Structure of the Stem of Catamites? % read 



* Phil. Trans., 1 871-1893. \ Phil. Trans., 1894. 



+ Memoirs and Proceedings of the Manchester Lit. dr 3 Phil. Soc. Series 

 IV., Vol. VIII., pp. 158-170. 



