HEADING -IN TO PRODUCE FRUIT 



179 



found to be 50.94 per cent ; in swellings, it was 

 59.20 per cent. In both samples, the contents (as 

 starch, dextrine, pentosans, and the like) were 

 calculated as reducing sugar. In normal winter 

 twigs, the reducing sugar was 

 28 per cent; in the swellings, 

 at the same date, it was 27.1 

 per cent. Calculated to fresh 

 substance, the percentages were 



118. Swellings on pear, resulting from fruit-bearing. 

 Half size. 



13.74 for the twigs and 11.06 for the swellings. 

 These tests still further show that these swellings 

 are mechanical tissue, resulting from the strain 

 of fruit -bearing, and that they are not to be 



