Feb. 1907.] IIAYATA.—ON TAIWANIA AND ITS AFFINITY. 27 



lies between the other two. Further, the transfusion tissue is 

 most developed in Cunninghamia, but it is the least in Cryp- 

 tomeria. Referring to this tissue too, we see that Taiwania 

 is the intermediate of the other two. 



What about Arthrotaxis then? I can only repeat my 

 regret that I have not any specimen of Arthrotaxis for 

 anatomy, and, therefore, cannot experimentally examine its 

 histological character. But we have seen that the external 

 relation of the three genera of Cunninghamia, Taiwania and 

 Cryptomeria, is proved to be true in their internal. In like 

 manner, we may very reasonably infer that what has been 

 stated about the three genera Cunninghamia, Taiwania and 

 Arthrotaxis in their external form will hold good in their 

 histology. We have no room to doubt that Arthrotaxis must 

 come nearer to Taiwania in its histology than Cryptomoria 

 comes, just as it does in its external structure. 



Upon considering all the above cases, I was led to the 

 conclusion that Taiwania must be placed between 

 Cunninghamia and Arthrotaxis. 



In conclusion, I must express my hearty thanks to Prof. 

 J. Matsumura under whose supervision this work has been 

 carried out. Thanks are also due to Prof. K. Fujii and Mr. 

 T. Makino, for their valuable advice. Nor should I forget 

 to tender my cordial gratitude to Dr. M. T. Masters of the 

 Linnean Society who has kindly aided my investigations by 

 many helpful suggestions. Lastly, I feel bound to express my 

 sincere thanks to Messrs. T. Taw ak ami and N. Konishi who 

 have generously put their valuable materials at my disposal. 



