Assimilatory Tissue of Mangrove Seedlings. 179 
Schimper 1 on the contrary, throws doubt on the assimilatory 
function of the stem of the embryo, since it is covered with a very 
thick cuticle, and since assimilatory tissue if present is very small 
in amount. The former assumption does not seem convincing 
since we know there are many leaves provided with thick 
Text-fig. 8. Brugniera sp. Part of transverse section of stem. 
cuticles which do assimilate. Goebel in his Pflanzenbiologische 
Schilderungenp acknowledges the assimilatory function of these 
stems, as does also Haberlandt (loc. cit.), but neither of these 
observers gives a detailed description of the assimilating tissue. 
It seemed to me therefore of some interest to examine the structure 
1 Schimper A. P. W. Die Indonialayische Strandfloia, 18J1. 
