1 T.\| l(i \ I [ON N\ I I II. I I I : I 1 I l> >.M \i.l.. 5 1 
b considerable percentage of the blossoms to drop, ye\ not enough 
to lessen the coming crop of fruit to any great extent . if at all. 
Experiment No. 8. During the months of April and May, 25 acres 
of Valencia and Navel oranges at Glendale, Cal., were fumigated by 
an expert under the direction of the Los Angeles horticultural com- 
mission. While this fumigation was in progress, trees could be 
found in all stages of blossoming, from those with blossoms just 
appearing to those in full bloom. The dosage rate used was esti- 
mated to be from three-fourths to l ounce per loo cubic feet. Of 
course this rate varied with different tree-, since the dosage was 
estimated after the usual guesswork method. Several examinations 
of the orchard were made. Although blossoms were injured on some 
of the (roes, the number was so small as in do u ay to lessen i he ful ure 
crop of fruit. 
Other instances might be mentioned, but the results correspond 
practically with those in the three experiments already described. 
Trees in which there were blossom-shoots and tender leaf-shoots 
side by side would have the leaf-shoots burned back while the blos- 
soms remained uninjured. Also numbers of cases could be found 
where the tender leaves on the blossom-shoots were burned while 
the blossoms themselves remained uninjured. This, as well as the 
heavy dosage which the blossoms will stand without injury, would 
lead us to conclude that the blossoms will stand a heavier dosage 
than the tender leaves and leaf-shoots. These experiments also 
show that fumigation can be safely conducted during the blossoming 
season, using such dosages as are at present generally employed by 
fumigators, or are advised in dosage schedule 1 (p. 65). 
FUMIGATION WHILE THE FRl IT is OF SMALL SIZE. 
Experiments and observations to determine the effect of fumiga- 
tion on fruits of various sizes, and more especially on small fruits, 
Were made during the season of 1908. Conflicting opinions on this 
subject are prevalent. 
Juperiment No. 1. — On June 16 two Valencia orange trees about 
S feet in height, in a healthy condition, and containing young fruit 
from three-eighths to one-half inch in diameter, were fumigated at the 
2-ounce dosage rate. Fully 25 per cent of the fruits on these trees 
were pitted or burned. 
Krperiment No. 2. — On June 1 24 a somewhat unhealthy Navel 
orange tree about L2 feel in height, 'with the fruits about one-half 
inch in diameter, was dosed at the rale of U ounces. Fully 50 per 
cent of the fruits were pitted. Two healthy Valencia orange trees 
about io feel in height, with fruits practically the same size as in 
the case of the Navel tree, received a dosage at The rate of 2 ounces. 
About 40 per cent of the fruits were burned 
