206 THE BOTANICAL MAGAZINE. [Vo i. xxiv. No. 234. 



plant (Bot. Magazine, Tokyo. 1908, Vol. XXII. p. (51), not 

 51, Proceedings of the Tokyo Bot. Society.). But from a little 

 inconstancy of their presence and because of its being too much 

 extraordinary case, I came into a doubt, whether they were 

 abnormal ones, as the case with Calamites (Stopes, 1907), or 

 they represented simply a kind of medullary transfusion elements 

 or conjunctive transfusion elements. 



But, in spite of the inconstancy of their occurrence, they are 

 very often observed and were confirmed by repeated observa- 

 tions. They are found, whenever they occur, in a direct con- 

 nection with the protoxylem of the centrifugal wood. Their 

 formation and the development of resin canals are often found 

 in association. 



A study of their developmental history is intended, and 

 after it has been done I may be in a better position to deal 

 with in details and to determine their true nature. It is much 

 desirable to see if any of such wood elements are found in the 

 axis of any of the Cretaceous pine allies. In case their forma- 

 tion proves to be an abnormal one and to be the result of any 

 external _event, it is desirable to see in future, whether it will 

 have here any phylogenetic meaning, as it was recently main- 

 tained by Jeffrey about the traumatic resin canals. 



Holeick and Jeffrey's studies (1) on Conifers from the 

 Middle Cretaceous of the Staten Island are of high importance. 

 Among other things the morphological and anatomical charac- 

 ters of Brachyphyllum macrocarpum interest me in particular, 

 as it seems to be allied with one of the plants which I have 

 been studying recently. 



I should like to take this opportunity to announce a change 

 of my own opinion about the affinities of Yezostrobus and 

 Yezonia (Stopes and Fujii, 1910). 



In describing the general character of the seed of Yezostro- 



(1) As the full memoir of Hollick and Jeffrey's studies is at present inacces- 

 sible for us, I have referred to its ' Eeferat ' and their papers on the same subject 

 which were published before. Consequently I may be way or ignoring any of the 

 statements found in the memoir. 



