PARK AND CEMETER Y. 
104 
TRANSPLANTING LARGE TREES AT ENTRANCE TO CITYPARK. DENVER. 
Ready to be loaded Showing some of the trees in place; loosening S.’tting one of 
on the truck. up another; the truck used in the work. ' the tr-ees in place. 
MOVING LARGE TREES AT CITY PARK IN DENVER 
The accompanying pictures give a 
brief illustrated story of the trans- 
planting of some large trees recently 
accomplished by the Park Board of 
Denver, Colo., in the work of making 
the improvements necessary for the 
new Esplanade entrance to the City 
Park, planned to be one of the hand- 
i somest park approaches in the coun- 
try. 
The trees were of unusual size to 
be lifted bodily with a huge ball of 
earth and taken to their new loca- 
tions by the truck, which may be seen 
in one of the illustrations, and indi- 
cates the methods and machinery used 
in the work. 
The Esplanade will lead from the 
intersection of York, Josephine and 
Columbine street across to Seven- 
teenth avenue and then a distance of 
about 400 feet into City Park at the 
Seventh avenue entrance. A great 
gateway is to be constructed within the 
park proper and facing an oval plot to 
be decorated with flowers and shrubs, 
a fountain and probably a statue or 
other central ornament will stand. 
The park board will expend $10,000 
on the esplanade this year. The e.x- 
penditure of this sum will complete 
all the preliminary work and next year 
the final improvements will be made. 
INSECT PESTS DO MUCH DAMAGE IN THE WEST 
Chicago is in danger of losing its soft 
maple trees, box elders and ornamental 
shrubs if measures are not taken to 
stop the ravages of the pulvinaria innu- 
inerabilis, commonly known as the cot- 
tony maple scale. J. H. Frost, who has 
had charge of the work of ridding 
Graceland Cemetery of the pest, makes 
the prediction, in a recent interview. He 
has been trying to free Graceland trees 
of the scale for two years, but is find- 
ing it difficult, because people liiing in 
the neighborhood do not co-operate in 
the war on the destructive insects, 
which breed outside and then invade the 
cemetery to feed on the leaves. 
“Something must be done at once," 
said Mr. Frost in discussing his work, 
“or the soft maple and box elders will 
he killed, together with other orna- 
mental trees and shrubs. The insects 
are gradually destroying the trees. 
The white cottony egg masses or egg 
sacs seen hanging to the under side of 
the twigs are produced by the adult in- 
sect in the spring and each egg sac con- 
tains from 200 to 1,000 eggs. These 
eggs begin to hatch the latter part of 
June and continue to hatch through the 
month of July. Hatching depends some- 
what upon the weather. Hot weather 
and sunlight favor the development. 
“This insect is a native species and 
has always been present in this country. 
It has been abundant from time to time 
in former years, hut has been kept under 
control by natural enemies. Our climate 
and environment seem to favor the pul- 
vinaria to such an extent that none of 
its natural enemies can multiply fast 
enough to control it. When only small 
trees are affected hand picking is the 
best remedy. Every egg sac should be 
picked off and burned before the eggs 
have begun to hatch. Large trees have 
been treated in various ways, but the 
most efficient is spraying. This may be 
done in the summer or late in the fall. 
Summer spraying should be done with 
a 10 per cent solution of kerosene emul- 
sion applied just after all the eggs have 
hatched. At this time the insect is in its 
weakest state of existence. 
“T cannot encourage summer spraying 
on account of the great difficulty of 
sprai'ing with any thoroughness, lioth 
surfaces of the leaves on trees having 
dense foliage and often of considerable 
height. Then, too, T find that summer 
spraying kills the natural enemies, 
which we wish to encourage and pre- 
serve. In view of these facts I am 
forced to encourage late fall or winter 
treatments. Just after the trees have 
become dormant the least number of 
these insects which will live over win- 
ter e.xist upon the trees and by spray- 
ing at this time with a ■.50 per cent so- 
lution of kerosene emulsion the largest 
possible percentage will he killed.” 
Homer Kla'p and E. C. Watkins, 
fruit and orchard inspectors, have re- 
ported to the council of Grand Rapids, 
IMich.. that the San Jose scale is be- 
coming a menace to fruit and shrul)her\’ 
and rapidly increasing on all sides. In 
a portion of the cit\' where none were 
found last spring, they now appear in 
great numbers, and this in spite of the 
effort to stay their ra\’ages by spraying 
and the pruning knife. It has been dem- 
onstrated that a more successful fight 
can he made during the winter than when' 
the foliage is in growth, and to this 
end it is strongl_\' urged that steps 1) ■ 
taken which will result in spraying of 
all trees and shrubbery infested. 
