98 SEVENTH ANNUAL MEETING OF THE 
T,wo of them are already within our borders; the others may 
be to-morrow. Your neighbor may to-day import the San 
Jose scale, and you may know that it is the dreaded insect,, 
but what are you going to do about it ? You may kill such* 
as cross to your premises, but you have no right to enter his 
field to destroy the source of infection. This brings to mind! 
the case in Sacramento. In 1885 the city trustees appropri¬ 
ated $200 to exterminate the fluted scale within the city lirm 
its; this was done excepting within certain premises where* 
trespassing was forbidden. This open source of contagion had 
to be endured until the legislature made it lawful to enter 
these premises. 
Let us take a brief review of these troubles. The olive pol- 
linia is a native of semi-tropical Europe; the gypsy moth, of 
France; the fluted scale, of Australia; the San Jose scale, of 
Chili; the serah, bacterial disease of sugar cane, of Java; pour- 
ridie, vine disease of France, is now in Australia; the Cali¬ 
fornia vine disease, of California; the peach and plum rosette,, 
present in the southern part of Georgia. 
The olive pollinia was brought to California on the olive,, 
by whom, not known. The fluted scale brought to California 
by private enterprise. The gypsy moth brought to Massa¬ 
chusetts by a foreigner. The San Jose scale in same way as 
fluted scale. Pourridie taken to Australia in a bunch of grape 
cuttings. Mango blight, not known. Serah, of sugar cane, 
peach rosette and California vine disease, still in the place of 
original discovery, and let’s keep them there. 
In looking over the diseases you will see that the great ma¬ 
jority have been introduced by carelessness of private enter¬ 
prise. It is a rare thing that a nurseryman or dealer allows- 
anything of this kind to be disseminated. 
Can anything be done to remedy this? Yes! What? 
First, prevent the introduction; seeond, stamp out any spo¬ 
radic case. Massachusetts is preventing the gypsy moth from 
spreading and is thinning out its numbers in the infested re¬ 
gions, although it infests thousands of acres. Iowa has cleared 
her fields of Canada thistle without costing the state anything. 
California has, on account of her carelessness, a herculean* 
task to peiform; if she perseveres success will crown her ban¬ 
ner. Florida is peculiarly free from disease. i know of no 
other one state so free from disease. If you will look 
at ihe map you will see that there is only one source from 
which natural infection can take place; that is from the north. 
The severest diseases of temperate United States do notflour- 
it-h in semi-tropical Florida, so there is only a limited number 
to be contracted from that source. The Australian, Chinese, 
Japanese and Western South American plants have been first- 
