204 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 11 
fit is now stored in a honey house. Mr. P., within a mile of this apiary 
on the same ridge, with bees covering the same pasturage, developed 
a prosperous apiary along side of this, apparently without infection 
until two years ago when the two remaining swarms of an apiary at 
some distance (L.C.) were purchased. This apiary had previously 
bought material from the original source at the bridge. When exam¬ 
ined this year these two swarms were badly diseased and everything 
else in the apiary appeared to be recently infected. Mr. F., owner of 
a prosperous apiary in another section, bought two swarms from across 
the river and later discovered that they had foulbrood. He then 
destroyed them. Still later he found five or six more cases in his 
yards and destroyed these. His apiaries are now entirely free from 
disease as is the community. 
Just below the next bridge is another badly infected area. Here 
the origin is somewhat obscure as there may have been two sources. 
Mr. B. and Mr. P.H. bought bees from another section further down 
the river several years ago. Mr. B. later bought a single hive from 
- across the river. Soon after the first purchase their bees began to 
dwindle until Mr. P.H. lost every colony in the apiary where these 
bees were placed, while Mr. B. had only two left in his. 
Five other apiaries in this section were found infected. Mr. B. 
sold to Mr. O.D., 12 miles distant, who has not been inspected as yet. 
Of these five infections three are traceable directly to the two prim¬ 
ary ones. Mr. G.’s case is instructive—he bought a few hives from 
his relative, Mr. D., and they were found badly infected as were Mr. 
D.’s, while the remainder of Mr. G.’s apiary was only just beginning 
to show ‘the disease. Yet Mr. G.’s bees had been within a mile of 
Mr. P.H.’s during the time they died out while Mr. W.D.’s bees were 
even closer to Mr. B. and remained free from disease. 
Out of 20 cases of American foulbrood in this area 15 are apparently 
definitely known to have been transmitted by the movement of hives 
and comb, while of the other 5 little information is available. In a 
number of cases the owners are related and would give little informa¬ 
tion in regard to possible sources, trying to magnify the importance of 
the bee-trees and minimize other possible sources. This investigation 
will be extended to the limits of this area and continued in other areas 
where the disease exists as they are surveyed, but if the findings of 
this area are borne out in other situations it will indicate that the most 
important method of preventing the spread of this disease is a strict 
quarantine of all infected material and the wide and persistent pub¬ 
licity of the fact that second-hand supplies should never be purchased 
except from recently inspected premises. Along with this should of 
course go the cleaning up and eradication of the disease in these areas, 
