198 
of the Mods Cushion-seale. ‘There may possibly have been’ subse- 
quent and independent importations, but that this is the one from which 
the main spread originated there can be little doubt. 
Irs SPREAD AND PRESENT LIMITATION IN CALIFORNIA. 
We are indebted to Mr. Matthew Cook e, of Sacr: amento, for com- 
a 
at 
iirtiets, six in the counties vs P Math San Mateo, Santa Clara, Sacra- 
mento, ma, and Napa, in the San Francisco region, and four in the 
P DT. of. Santa Barbara and Los Angeles, in the southern portion of 
the Stat 
The first infested distriet extends from Menlo Park to San Mateo, a 
distance of 10 miles, It is bounded on the east by the Scuthern Pacific 
Railroad, and extends some 3 miles west, including in consequence some 
30 square miles. But little effort, according to Mr. Cooke, has been 
made to eradicate the pest in this district. 
The second infested district is contained within the town limits of 
‘San Rafael, County, about 14 miles north of San Francisco. In 
this district it has been held in check, but there are still some to be 
found, and its increase is only de ndent upon a lapse of vigilance 
and shrubbery, but nd not seem to trouble the deciduous iud ecd to 
any extent. A n José energetic measures have 
trees have been dat "ba å nd their trunks serubbed until tho poit hee 
en thoroughly bea Riese At Santa Clara, however, little has been 
done, and some places are seriously infested. 
he fourth infested district occurs at the city of Sacramento, where 
only about 120 acres are infested, although it 1s stated to be rapidly 
The insect was first discovered in this district by Mr. Cooke 
in October 1885, in about eight gardens. The city trustees appropriated 
$200, and with this sum it was digi Ae except upon one premises 
n ep authorities could not en Mr. Cooke gives in this con- 
an instance of the vapiti ‘of the satlsipbestion Mid spread 
of the insect the following :— 
* In Oc 1885 a patch of these insects covering a space of about 
3 by 4 eth wi notieed upon a limb of an aeacia tree. From these 
it spread, and in a little more than a year several orange and lemon 
cxi and other Shits hl closely i in an area of about 160 by 80 
ad become seriously infested.” 
The fifth infested district is found at Healdsburg, Sonoma County, 
about 65 miles north by west of San Franci the insect is 
mainly comprised within the town limits, ee infests the shade trees 
along the streets and the shrubbery in the gardens, 
In Mr. C sah e’s sixth district the insect cannot be said to exist at 
present. It comprises a single garden in the town of Saint pM 
Nis TUIS “about 60 miles north by east of San Francisco. It w 
found upon a rose bush in that place by Mrs. Richard Wood in October 
"d cane bush was destroyed, and the pest has not been fosse] in that 
on sin 
"The se siib infested district includes the city of Los Angeles, where 
the isset is — confined, according to Mr. Cooke, to the gar- 
