9 8 
Journal of Agricultural Research 
Vol. XXVII, No. 2 
A conspicuous brown mottling of the seed coat has not been correlated 
with mosiac. 
Seed selected from mosaic-free plants gave rise to mosaic-free seedlings. 
A considerable spread of mosaic occurred during the growing season. 
This secondary spread was more extensive in some seasons than in others. 
Apparently the disease did not materially lower the percentage of seed 
germination. 
Mosaic reduced the yield of seed 30 to 75 per cent. The number of 
seeds per plant was greatly reduced; in fact, plants with mosaic of seed 
origin frequently bore no seeds whatever. 
LITERATURE CITED 
(1) Archibald, E. S. 
1921. report of the acting dominion botanist. In Rpt. Dominion Exp. 
Farms (Canada), 1919-20, p. 58-64. 
(2) Cunningham, G. C. 
1922. report of dominion field laboratory of plant pathology, Frederic¬ 
ton, n. b. In Interim Rpt. Dominion Botanist, Canada Exp. Farms, 
1921-22, p. 23-30. 
(3) Dickson, B. T. 
1922. studies concerning mosaic diseases. MacDonald College (Quebec) 
Tech. Bui. 2, 125 p., 8 pi. 
(4) Doolittle, S. P., and Gilbert, W. W. 
1919. seed transmission of cucurbit mosaic by the wild cucumber. In 
Phytopathology,v. 9, p. 326-327. 
(5) Gardner, Max W., and Kendrick, James B. 
1921. soybean mosaic. In Jour. Agr. Research, v. 22, p. m-114, pi. 18-19. 
(6) Newhall, Allan G. 
1923. SEED transmission of LETTUCE mosaic. In Phytopathology, v. 13, 
p. 104-106. Literature cited, p. 106. 
(7) Reddick, Donald, and Stewart, V. B. 
1919. additional varieties of beans susceptible to mosaic. In Phyto¬ 
pathology, v. 9, p. 149-152. 
( 8 ) -. 
1919. transmission of the virus of bean mosaic in seed and observa¬ 
tions on thermal death-point of seed and virus. In Phytopath¬ 
ology, v. 9, p. 445 - 450 - 
(9) Wiancko, A. T., and Mulvey, R. R. 
1922. soybeans in Indiana. Ind. Agr. Exp. Sta. Bui. 238 (revised), 16 p t , 
8 fig. 
