X 
Journal of Agricultural Research 
Vol. XIV 
Susceptibility and Resistance to Citrus-Canker of the Wild Relatives, page 
Citrus Fruits, and Hybrids of the Genus Citrus 
Plate 50. A .—Citrus Medica , citron of commerce (CPB 7768); B .—Citrus 
grandis , grapefruit (CPB 11170); C.—Thornton tangelo (CPB E-715 A); 
D < —Citrus sp., limon real 18 (CPB 7819). 358 
Plate 51. Results of Citrus-canker inoculations: A .—Citrus sp., “naranja, ” 
native orange (CPB 7929); B .—Citrus grandis , pummelo (CPB 7834); C.— 
Citrus aurantifolia, sour lime (CPB 7338); D .—Cirtus sp., talamisan 
(CPB 7827). 3 SS 
Plate 52. Results of Citrus-canker inoculations: A .—Citris mitis , Calamon- 
din orange (CPB 44305); B .—Citrus sp., Kansu orange (CPB 11242); C.— 
Citrus Hystrix (CPB 7872); D.—Timelo (CPB 40567B); E .—Citrus nobilis 
var. unshiu , Satsuma... 358 
Plate 53. Results of Citrus-canker inoculations: A.—Citrumelo (CPB 4493); 
B.—Colman citrange (CPB 7896); C.—Cicitrange (CPB 48316A); D.— 
Citrandarin (CPB 40210); E.—Morton citrange (CPB 771 A); F.—Faus- 
trime (CPB 49819); G.— Microcitrus australis (CPB 7427); H. —Citrus sp.. 
sweep lemon (CPB 1158); I.— Citrus sp., Davao lemon (CPB 7837); J.— 
Eimequat (CPB 48787B).. 358 
PiftoN Blister-Rust 
Plate 54. Specimens from the type collection of the secial stage (Peridermium 
occidentals) of Cronartium occidentals on Pinus edulis from Bayfield, Colo.. 424 
Plate 55. The secial stage {Peridermium strobi) of Cornartium ribicola on 
Pinus strobus from Kittery Point, Me. 424 
Plate 56. A young pinon tree {Pinus edulis) diseased with Peridermium occi¬ 
dentals in the pycnial stage, natural infection. 424 
Plate 57. The uredinial and telial stages of Cronartium occidental on Ribes 
aureum from the type material collected at Bayfield, Colo.; artificial inocu¬ 
lation..... 424 
Overwintering of the Citrus-Canker Organism in the Bark Tissue of 
Hardy Citrus Hybrids 
Plate 58. Citrus-canker spots on twigs from plants in the isolation field, inoc¬ 
ulation on September 16, 1917. A.—Citrandarin (CPB 40175A). B.— 
Poncirus trifoliata (seedling, Alabama). C.—Savage citrange (CPB 7961). 
D.—Rusk citrange (CPB 7956A)... 524 
Occurrence of Coccidioidal Granuloma (Oidiomycosis) in Cattle 
Plate 59. Coccidioides immitis: A.—Camera-lucida drawing showing parasites 
from fresh pus in various stages of development. B.—Photomicrograph of 
of the hyphae and spores from an old potato culture. C.—Photomicrograph 
of a nodule of spleen from a guinea pig, showing adult parasites lying free 
in granulation tissue. 542 
PLATE 60. Coccidioides immitis: A.—Photomicrograph of the lung of rabbit 1, 
showing nodules with many parasites. B.—Photomicrograph of a local 
lesion calf 184, showing large giant cells with parasite inclosed in one of 
them. C.—Photomicrograph of a loeal lesion calf 184, showing a ruptured 
sporulating form inclosed in large giant cell... 542 
Tissue Invasion by Plasmodiophora brassicae 
Plate 61. Plasmodiophora brassicae: A cabbage plant 3 months old; photo¬ 
graphed six weeks after being inoculated at a single point on one side of 
the stem. 572 
