AUTHOR 6 ABSTRACT OF THIS PAPER ISSUED 

 BY THE BIBLIOGRAPHIC SERVICE, NOVEMBER 17 



A STUDY OF BRAINS AND SPINAL CORDS IN A 

 FAMILY OF ATAXIC PIGEONS 



TEIJI HOSHINO 

 Hull Laboratory of Anatomy, University of Chicago 



THREE FIGURES 



Although it is said that hereditary disturbances of coordination 

 in man are very rare, still not a few reports have been published, 

 especially since Friedreich ('63, '75) and Marie ('93) described the 

 disturbances from both an anatomical and clinical point of view. 

 Of similar conditions in lower mammals, three cases have been 

 reported: in the kitten by Krohn ('92), Langelaan ('07), and 

 Jelgersma ('18). 



So far as I could find no authors have hitherto investigated 

 hereditary incoordination in birds. Such a study might throw 

 some light on the comparative and pathological anatomy of this 

 condition. 



The birds which form the foundation of this report were pre- 

 sented by Dr. Oscar Riddle, of the Carnegie Station for Experi- 

 mental Evolution, Cold Spring Harbor, Long Island, New York, 

 to Dr. C. J. Herrick, Professor of Neurology in the University of 

 Chicago, who was good enough to turn them over to me to study 

 the changes in the central nervous system. I am indeed very 

 much indebted to these gentlemen for giving me such an oppor- 

 tunity, and in particular to the latter who has given me valuable 

 suggestions in the course of the investigation. I also wish to 

 thank the members of the anatomical department who so kindly 

 made it convenient for me to carry on this work. 



Doctor Riddle has sent us a very exact and complete family his- 

 tory of the birds. He has studied heredity in pigeons for several 

 years, continuing the work of Professor Whitman. The history 

 will be interesting, for in man we seldom find such an exact and 



in 



