440 URIST, MACDONALD, MOSS, AND SKOOCi 



Service (No. A-3793); the Easter Seal Foundation; the Society for Crip- 

 pled Children; and the Ayerst Laboratories Inc. Dr. Moss is an orthopedic 

 Research Fellow, 



The writers announce their indebtedness and present their thanks to 

 James A. Dingwall, M.D., and the Squibb Institute for Medical Research, 

 who supplied polysaccharides extracted from calf bone; and to the mem- 

 bers of the Endocrinology Study Section of the National Institutes of 

 Health, United States Public Health Service, who provided human growth 

 hormone for these investigations. 



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