Journal of Agricultural Research 
Vol, XIV, No. io 
424 
(5) Posey, G. B., Gravatt*, G. F., and Colley, R. H 
1917. uredinia op cronartium ribicola on ribes STEMS. In Science, n. s., 
v. 46, no. 1167, p. 314-315. 
(6) Spaulding, Perley. 
1911. THE BLISTER RUST OP white PINE. U. S. Dept. Agr. Bur. Plant Indus. 
Bnl. 206, 88 p., 5 fig., 2 pi. (1 col.). Bibliography, p. 61-78. 
(7) Stewart, F. C. 
1906. AN OUTBREAK OP THE EUROPEAN CURRANT RUST (CRONARTIUM RIBICOLA 
dietr.). N. Y. State Agr. Exp. Sta. Tech. Bui. 2, p. 61-74, 3 pi. 
Bibliography, p. 71-74. 
Cites Arthur, p, 63. 
PLATE 54 
Specimens from the type collection of the secial stage (Peridermtum occideniale) of 
Cronartium occideniale on Pinus edulis from Bayfield, Colo. One twig has an secial 
cavity exposed by turning back the overlying bark. 
