Balloon Berry Bush AJter Pollenatibn 



Here small paper bags have been tied loosely over 



the flowers that have been cross-fertilized. Mr. Burbank does 



not usually find it necessary to resort to this expedient, for ij the stigma 



oj a flower is entirely covered with pollen, there is little danger 



oj subsequent contamination with other pollen. To make 



assurance doubly sure, however, the paper bags 



may be used, particularly by the amateur 



who operates on a small scale. 



