BUD VARIATIOlSr IIST THE MAESH GRAPEFRUIT. 21 



these tables is their average total annual production expressed in 

 pounds, without regard to the quahty or uniformity of the fruit. 

 This arbitrary basis is adopted only because of the impracticability 

 of working out a system to show the actual relative commercial 

 value of each individual tree; hence, the order in which the trees 

 are here listed is not always an indication of their true value, either 

 as fruit producers or as sources of desirable bud wood for propaga- 

 tion. 



In expressing the averages of weights in these tables only one 

 decimal place has been retained, and in the figures showing the 

 averages of the number of fruits occmTing in different groups no 

 decimal has been retained except where the average is less than 

 unity; hence, it will be foimd that the totals of averages will some- 

 times vary slightly from the average of the totals of the correspond- 

 ing numbers. 



Cull fruits were not recorded for the years 1910 and 1911, hence 

 the average production of that grade is not strictly comparable 

 with the averages of the other grades, and the total of the averages 

 of the thi'ee grades is not equivalent to the average of the total crops. 



Because it is impracticable to assort the culls by sizes, the fruits 

 listed by sizes under the heading "Total crop" represent only the 

 total commercial crops, being equal to the total crop exclusive of 

 the cuUs, 



In determining the seed content of fruits on the different trees, 

 counts are made, when possible, of the seeds in a small, a medium, 

 and a large fruit of each of the three grades. In this way a record is 

 secured of the actual number of seeds in nine fruits from each tree, 

 yearly, and it is thought that this system gives a fairly accurate indi- 

 cation of the relative seediness of the fruits of the different trees. 

 Counts were not made on plat B until 1912, and no determinations 

 were made in the CuU grade on either plat until 1914. In 1910, only 

 one fruit of the Ivory-White grade and two fruits of the Standard 

 grade were used for this purpose. In 1911 and 1912, three fruits from 

 the Ivory-White grade and six from the Standard grade were used, 

 and in 1913 three from both the Ivory-White and Standard grades 

 were cuto In 1914 and 1915, three fruits from each of the three grades 

 were examined, when possible. The general average for each year 

 is secured on the basis of the actual number of fruits examined and 

 not from an average of the averages of the different grades. No 

 record of the occurrence of variable fruits was made until 1912. 

 The increase in the number of such fruits recorded during recent 

 years is due to the fact that the observers have gradually become 

 famOiar with additional variable forms. Practically aU the variable 

 fruits recorded are of minor importance, such as those with ridges, 

 raised or sunken sections, or creases. 



