FLORIDA STATE HORTICULTURAL SOCIETY 
171 
pies from Summerfield are remarkable, 
in that the good quality of the fruit was 
maintained until very late in the season. 
The other two samples showed a breaking 
down in the sugar content by the middle 
of November, which is naturally expect¬ 
ed. 
Chart 6 of Silver Cluster grapefruit is 
peculiar in that it indicates a breaking 
down of the sugar rather early in the 
season in the fruit from Florence Villa 
Fruit Company, while the other series 
grown in the same vicinity maintained its 
good quality into February. 
Chart 8 is of interest in showing the 
series taken at Terra Ceia, where the 
fruit was low in sugar and low in acid 
throughout the season, while the eating 
qualities were likewise inferior. There 
is quite a remarkable variation shown 
here between the two series of the same 
variety. 
Chart 9^ of budded grapefruit, but of 
no particular variety, shows no great de¬ 
viation from the normal, the curves run¬ 
ning about the normal way for grape¬ 
fruit. 
Chart io shows a series of Valencias, 
taken at Winter Garden. The series 
shows very low sugar and high acid con¬ 
tent at the beginning of the season, ma¬ 
turing, however, with a fairly high per¬ 
centage of acid and very high percentage 
of sugar about the middle of January. 
Chart ii shows a Triumph grapefruit 
with a rather high sugar content and 
a very low acid content, making the fruit 
palatable early in the season. 
The common Florida represented on 
the same chart is remarkable in showing 
a rapid rise in the acid content until the 
latter part of November, and then con¬ 
tinuing somewhat irregularly until after 
the middle of February. The sugar 
content of this series began at a high 
figure the latter part of October and grad¬ 
ually increased until the close of the sam¬ 
pling season, when a very high sugar 
content was reached. Toward the end 
of the season this grapefruit was of 
very high quality, and was in fact the 
best of all of those analyzed. The series 
shows distinctly what may be expected 
chemically from an analysis of a high 
quality of grapefruit. 
Chart 12 is of interest in showing the 
relation of sucrose or cane sugar to the 
invert or reducing sugars of the orange 
when we take the average of all the seed¬ 
ling samples sent in. 
Chart 13 shows graphically the anal¬ 
yses of fruit taken from a number of 
groves of seedlings under clean culture 
and under non-cultural conditions. The 
results shown here are rather contrary to 
what is a very frequently expressed 
opinion. They show that on the average 
we can not expect to influence the quali¬ 
ty of fruit materially by cultivation or 
non-cultivation. 
Chart 14, potash, shows composite 
curves made up of analyses of all the se¬ 
ries of seedling oranges received by 
grouping those receiving a fertilizer high 
in potash in one series and those of low 
potash fertilization in another series. The 
data shown graphically here does not 
bear out the very general opinion that a 
fertilizer high in potash gives a sweeter 
orange than one low in potash. The su- 
