172 
FLORIDA STATE HORTICULTURAL SOCIETY 
gar content of these series run uniformly 
alike. 
In the case of acid content the curves 
show that a high potash fertilizer led to 
a slight but uniformly higher percentage 
of acid in the fruit. 
Chart 15, phosphoric acid, shows 
curves obtained in the same way as 
those shown on the potash chart. The 
curves on this chart show very little de¬ 
viation, frequently crossing one another, 
showing that phosphoric acid has proba¬ 
bly no material influence on the varia¬ 
tion in the sugar and acid content of the 
fruit. 
Chart 16, location. The section desig¬ 
nated here as North includes Lake, Vo¬ 
lusia, and Orange counties; Middle, Pi¬ 
nellas, Hillsboro, and Polk; South, Man¬ 
atee, DeSoto, and Lee. The curves 
shown here are made up of composites 
of the seedling oranges received from the 
three sections. They show in a general 
way that the fruit in the South region 
matures earlier than that in the Middle 
or North sections. The curve for the 
North section crosses both the others. In 
a general way it is shown that Manatee, 
DeSoto, and Lee counties should market 
their fruit earlier than sections farther 
north. 
It should be remembered, however, 
that the question of earliness or lateness 
of seedling fruit depends more on paren¬ 
tage than on region. 
A bulletin giving in detail the analysis 
of each individual sample will be pub¬ 
lished by the Experiment Station. 
DISCUSSION. 
Mr. Hume: I am sure we are all very 
much interested in the discussion. I am 
sure Professor Collison’s lecture has 
thrown some light on some of the ques¬ 
tions which have been bothering us. Are 
there any questions you would like to 
ask Professor Collison? 
Mr. Stewart: The question has been 
asked as to what effect a high amount 
of phosphoric acid would have on the 
rind of the orange. 
Mr. Hume: I understand that is a 
question which Professor Collison has 
not gone into. 1 
Air. Collison: I have made no obser¬ 
vation about that. 
Air. Hume: I guess the question will 
have to go unanswered. 
Mr. Rolfs: I want to say that we are 
now in a position, after having made 600 
analyses, to speak with some degree of 
assurance about some of the results, as 
you see. It was not guess work: the re¬ 
sult of some fifteen or twenty analyses, 
but there are 600 analyses back of what 
we have presented, not only from one 
locality, but from as far south as Fort 
Myers, up through the State. You must 
remember these slides are not based on 
one analysis, but rather a composite of a 
large number of analyses, and that is 
where the value of it lies. 
I also want to say that we have just 
touched the field; just begun it. We have 
still a great mass of information tied up 
in the constituents of the samples. There 
are about 600 samples waiting for fur¬ 
ther work. There are a great many 
questions that could be answered as 
