Because of the extreme difficulty of doing bibliographical work in postwar 

 Japan under the extremely unfavorable conditions for making contact with foreign 

 investigators, probably even a great effort to make a complete and correct 

 bibliography has been unsuccessful. I believe there are papers missing from my 

 files that should be added. Since I do not doubt that this compilation is far 

 from being complete, I sincerely hope that workers in various parts of the world 

 will call oversights to my attention. These corrections can be added to a 

 future revision of the list. I also would appreciate the correction of any 

 errors of citation. 



* * * 



Acknowledgment ; I have much pleasure in taking opportunity to express 

 my sincere thanks to Professor Warren H. Leonard of the Colorado A. & M. College 

 who was in Japan in 1945-46 and again in 1948-49, and who kindly advised me to 

 publish the second edition of the chromosome list. Because the labor of the 

 work has been greatly lessened by his constant encouragement, I wish to express 

 ray gratitude to flneritus Professor K. Oguraa. My warm acknowledgment also is due 

 to Professor F. Schrader of the Columbia University, for the Foreword to the 

 first edition, and for aid in accomplishing the work. Especially, I wish to express 

 to the co-workers of my institute my sincere thanks for valuable assistance. 



SAJIRO MAKINO 



July, 1950 

 Zoological Institute 

 Faculty of Science 

 Hokkaido University 

 Sapporo, Japan 



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