748 



Ausländische Literatur. 



of Soybean. 179 — 193; 10 Taf. — Kopeloff, N., and Lillian, Do Mold Spores. 

 Contain Enzyms? 195 — 209. — Miller, E. C, Development of the Pistillate Spi- 

 kelet and Fertilization in Zea mays L. 255 — 265; 14 Taf. — Breazeale, J. F., 

 Response of Citrus Seedlings in Water Cultures to Salts and Orgaurc Extracts. 

 267- — 274; 2 Taf. — Hawkins, A., and Harvey, B, R., Physiological Study 

 of the Parasitism of Pythium debaryanum Hesse on the Potato Tuber. 275 

 — 297; 3 Taf. — Le Clerc, J. A., and Breazeale, J. F., Effect of Lime upon the 

 Sodium-Chlorid Tolerance of Wheat Seedlings. 347 — 356; 10 Taf. — Shive, 

 J. W., Relation of Moisture in Solid Substrata to Physiological Salt Balance 

 for Plauts and to the Relative Plant-Producing Value of Various Salt Pro- 

 portions. 357 — 378. — • Speare, A. T., Further Studies of Sorosporella uvella, 

 a Fungous Parasite of Noctuid Larvae. 399 — 439; 6 Taf. — Menaul, P., and 

 Dowell, C. T., Cyanogenesis in Sudan Grass: A modification of the Francis- 

 Connell Method of Determining Hydrocyanic Acid. 447 — 450. — Edson, H. A., 

 and Shapovalov, M., Temperature Relations of Certain Potato-Rot and Wilt- 

 Procuding Fungi. 511 — 524. — Anthony, S., and Harlan, H. V., Germination 

 of Barley Pollen. 525 — 536; 2 Taf. — Kopeloff, N., and Byall, S., Invertase 

 Activity of Mold Spores as Affected by Concentration and Amount of Inoculum. 

 537 — 542. — Garner, W. W., and Allard, H. A., Effect of the Relative Length 

 of Day and Night and Other Factors of the Environment on Growth and Repro- 

 duction in Plauts. 553 — 606; 16 Taf. — 



Bd. XIX, 1920. Collins, G. N., and Kempten, J. H., A Teosinte-Maize 

 Hybrid, i — n; 7 Taf. — Sarvis, J. T., Composition and Density of the Native 

 Vegetation in the Vicinity of the Northern Great Plains Field Station. 63 — 72; 

 3 Taf. — Salter, Robert, M., and Mcllvaine, T. C, Effect of Reaction of Solution 

 on Germination of Seed and on Growth of Seedlings. 71 — 95. i Taf. — Westen, 

 W. H., Philippine Downy Mildew of Maize. 97 — 122; 12 Taf. — ^ Brandes, E. W., 

 Artifical and Insect Transmission of Sugar-Canc Mosaic. 131 — 138. — Elliott, 

 C, Halo-Blight of Oats. 139 — 172; 11 Taf. — Lee, H., Behavior of the Citrus- 

 Canker Organism in Soll. 189 — 205; 2 Taf. — Fulton, H. R., Decline of Pseudo- 

 monas citri in the Soll. 2.07 — 223. — Hungerford, C. W., Rust in Seed Wheat 

 and Its Relation to Seedling Infection. 257 — 277; 11 Taf. — Harris, J.A., 

 Practical Universality of Field Heterogeneity as a Factor lufluencing Plot 

 Vields. 279 — 314. — Schultz, E. S., and Folsom, D., Transmission of the Mo- 

 saic Disease of Irish Potatoes. 315 — 'iZT-, 8 Taf. — Peltier, G. L., and Frederich, 

 W. J., Relative Susceptibility to Citrus-Canker of Different Species and Hy- 

 brids of the Genus Citrus, Including the Wild Relatives. 339 — 362; 12 Taf. 

 — Harlan, H. V., Daily Development of Kernels of Hannchen Barley from 

 Fldwering to Maturity at Aberdeer, Idaho. 393 — 429; 9 Taf. — Harlan. H. 

 V., and Anthony, S., Development of Barley Kernels in Normal and Clipped 

 Spikes and the Limitations of Awnless and Hooded Varietis. 431 — 472. — 

 Magness, J. R., Investigations in the Ripening and Storage of Bartlett Pears. 

 473 — 500. — Kunkel, L. 0., Further Data on the Orauge-Rusts of Rubus. 501 

 — 512; 4 Taf. — Gochenour, W. S., Germ-Free Filtrates as Antigens in the 

 Complement- Fixation Test. 513 — ^515. — Brandes, E. W., Mosaic Disease of 

 Corn. 517 — 521 ; 2 Taf. — Hayes, H. K., Parker, J. H., and Kurtzweil, C, Genetics 

 of Rust Resistance in Crosses of Varieties of Triticum vulgare with Varieties 

 of T. durum and T. dicoccum. 523 — 542; 6 Taf. — Whipple, 0. B., Ivine-Selection 

 Work with Potatoes. 543 — 573. — Harlan, H. V., and Hayes, H. K., Occurrence 

 of the Fixed Intermediate, Hordeum intermedium haxtoni, in Crosses between 

 H. vulgare pallidum and H. distichon palmella. 575 — 591; 4 Taf. 



American Journal of Botany. 



Bd. I, 1914. I* Atkinson, G. F., The development of Agaricus arvensis 

 and A. comtulus. 3 — 22 ; 2 Taf. — White, 0. E., Studies of teratological phenomena 



