256 
Journal of Agricultural Research 
Vol. XXI, No. 4 
The east coast section differs from the interior and west coast sections 
of Florida rather strikingly in that an abundance of lime is present in 
the soil, cropping out here and there. Therefore this type of soil is 
probably in the main alkaline, as opposed to the more or less acid soil 
of the pine flats and the more rolling pine lands of the interior. It is 
suggested, therefore, that further studies of the distribution of Bacterium 
solanacearum EFS be made in Florida with special types of soil in mind 
to see if there is anything in this suggestion. 
Fig. i.—M ap showing distribution in Florida in 1918 of Ricinus wilt due to Bacterium solanacearum. 
X indicates localities where the disease was found; O. localities where the disease could not be found. 
Late in the season plantings in the Everglades muck land, in the 
vicinity of Moorehaven, were inspected without any signs of the wilt 
being found. The outline map (fig. i) shows the distribution of the 
wilt in Florida, as well as the points where the disease was searched for 
and not found, showing the sharp division of the State into two distinct 
regions. 
Another observation on the soil type and its apparent relationship to 
wilt, as reported by Mr. Jagger, is to the effect that the newer land was 
more likely to show the wilt than land that had been longer under 
cultivation. This was observed on numerous occasions in the sections 
where wilt occurred. One or two particular cases may be mentioned. 
