6 BULLETIN 829, U. S. DEPARTMENT OF AGRICULTURE. 
but only about one-fourth of the cane fields in this county harbor 
the infection at all. The affected area is quite sharply delimited, all of 
the disease being confined at present to farms located on the high- 
ways leading out from Cairo. The cane fields in Georgia consist 
usually of a few acres grown for sirup making. It is quite possible 
that by prompt and energetic action this community could free 
itself from the mosaic disease in short order. 
Cane fields are distributed over practically the whole State of 
Florida, but the crop is grown largely for sirup for home use and 
the cane patches are even smaller than those in Georgia. Mosaic 
has been widely scattered over the State by the distribution of cut- 
tings from experimental plats grown for the purpose of testing 
varieties. There are only two points, however, where the disease 
has spread so as to include any considerable area, namely, the vicini- 
ties of Marianna and Bristol. Other points in Florida where mosaic 
has been found include Apalachicola, Tallahassee, Punta Gorda, 
Palmetto, De Land, Winterhaven, Chattahoochee, Muscogee, and 
Canal Point. These are all purely local infections, and in some cases 
the disease has not yet spread more than a few rods from the 
original plantings shipped in from other States. An eradication 
campaign would be entirely practicable in Florida. 
Mosaic has been discovered at only one point, Biloxi, in Mississippi. 
From the farm on which it first appeared it spread to one other farm 
in the vicinity. 
In Alabama similarly, it was found only on one place, near Mus- 
cogee, Fla. It was confined to the farm where it first appeared. 
Final reports on the results of the inspection in Texas must be 
deferred, since the survey is still under way in that State. 
The survey has also been very illuminating concerning the prob- 
able time of introduction of the disease into this country and the 
method of its subsequent spread here. Since 1913 a prohibitory 
regulation has been placed upon the introduction of sugar cane into 
the continental United States, and it is probable that no cane has 
been introduced since that time. Prior to 1913 varieties of sugar 
cane were imported many times by private individuals and by various 
Government agencies. The Sugar Experiment Station of the Louisi- 
ana State University, at Audubon Park, has been particularly active 
in importing new varieties, with the idea of securing some higher in 
sugar content and yield than those already grown here. Whether the 
mosaic was introduced by the experiment station or by private indi- 
viduals no particular blame attaches to those who are responsible for 
the importation of this obscure disease. There is no known method 
by which the presence of the disease in cuttings can be positively 
established. It is merely pointed out that such an importation 
would be practically impossible with the present quarantine against 
