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Bibliography: 
(1) Anonymous 
1904-1931 Leaflet No. 105, Board of Agriculture and Fisheries 
(of Great Britain) was first issued in April, 1904, and has 
been revised from time to time by the Board and its suc- 
cessor, the Ministry of Agriculture and Fisheries. The 
leaflet summarizes information regarding potato wart, methods 
of control, immune varieties, and quarantine measures in the 
British Isles. 
Revision of December 1908 . 
Although the disease has been known to potato growers in 
the Liverpool district for some 15 years, it was not reported 
to the Board until 1901. Also in Wales, Scotland and else- 
where. 
L eaflet No. 105, Ministry of Agriculture and Fisheries , 
rewritten May 1928 . 
Wart originally discovered in Upper Hungary (now part of 
Czechoslovakia) in 1896. May have been in England ten, 
twenty, or even more years previously. In any case the two 
earliest British records, made in 1898, show that the disease 
was already present here then, but those who saw it at that 
time did not diagnose it correctly. "The first accurate 
account of Wart Disease published in this country was based 
on experiments carried out by Professor Potter with material 
collected in Cheshire in 1900, and is to be found in the 
Board's (now the Ministry's) Journal for December, 1902." 
Reported in Scotland in 1907 and in Ireland in 1908. — Dis- 
ease found in Austria, Belgium, Czechoslovakia, Denmark, 
France, Germany, Holland, Norway, Poland, Sweden, and Switzer- 
land in addition to original place in Hungary. Also in Malta, 
South Africa, New Foundland, Canada, and U. S. p. 2-3 
L osses due, to Wart disease . — It is impossible to estimate 
with accuracy our present actual losses from this disease. 
They must be on the whole relatively small " even 
under field conditions instances are not unknown where the 
planting of a susceptible variety in contaminated soil has 
resulted in practically a total loss of crop." p. 5. Spread 
of the Disease, of itself, by seed, water, man, animals, dung, 
etc. - Hosts p. 5 & 6. p. 5 Disease has appeared in a crop 
grown in land originally contaminated with sporangia, but in 
which no potatoes had been grown for periods of eight and 
twelve years. " there is apparently at present no instance 
on record where soil, once well contaminated with the resting 
sporangia of the Wart Disease fungus, has ever yet become quite 
free from them and absolutely safe for the renewed planting of 
a susceptible variety in it." (Also in 1931 edition) 
Leaflet No . 105, Oct. 1931 rev ision . 
p. 2 adds Finland, Roumania, Japan to countries infected and 
