IV Journal of Agricultural Research voi. xex 



Page 



Presoak Method of Seed Treatment: A Means of Preventing Seed 

 Injury Due to Chemical Disinfectants and of Increasing Ger- 

 micidal Efficiency. Harry Braun 363 



Daily Development of Kernels of Hannchen Barley from Flower- 

 ing to Maturity at Aberdeen, Idaho. Harry V. Harlan 393 



Development of Barley Kernels in Normal and Clipped Spikes and 

 the Limitations of Awnless and Hooded Varieties. Harry V. 

 Harlan and Stephen Anthony 43 1 



Investigations in the Ripening and Storage of Bartlett Pears. 

 J. R. Magness 473 



Further Data on the Orange Rusts of Rubus. L. O. Kunkel- • • • 501 



Germ-Free Filtrates as Antigens in the Complement-Fixation 

 Test. William S. Gochenour 513 



Mosaic Disease of Corn. E. W. Brandes 517 



Genetics of Rust Resistance in Crosses of Varieties of Triticum 

 vulgare with Varieties of T. durum and T. dicoccum. H. K. 

 Hayes, John H. Parker, and Carl Kurtzweil 523 



Line-Selection Work with Potatoes. O. B. Whipple 543 



Occurrence of the Fixed Intermediate, Hordeum intermedium 

 haxtoni, in Crosses between H. vulgare pallidum and H. dis- 

 tichon palmella. Harry V. Harlan and H. K. Hayes 575 



Index 593 



ERRATA AND AUTHORS' EMENDATIONS 



Page 97, line 20, "were" should read "would be. " 



Page no, Table I, column i, line 13, "24" should read "23." 



Page 136, line 2, "Pseudococcus boninensis" should read " Pseudococcus honinsis." 



Page 202, following line 16, add " C. trifoliaia seedlings, however, on testing are readily susceptible to 



the disease." 



Page 232, Table XVI, footnote, ">•=— 0.452 ±0.068" should read "r=— o.i66±o.o83." 



Page 236, line r, "The spores, both conidia and ascospores, behaved alike in germination" should read 



"The conidia from both conidia and ascospores behaved alike in germination." 

 Page 242, line 22, "Al2(SO<)3 0.18 H2O" should read "Al2(S04)3 • 18 H2O" and "FeS04 0.7 HsO" should 



read "FeSOi . 7 H2O. " The same correction should be made in Tables III, IV, V, and VII. 



Page 278, Plate 47 and legend. "Internal hilar sorus shown at i" should be omitted. The marking x is 



incorrectly placed on the plate. There are two internal hilar sori shown in the lower right-hand portion of 



the plate. 

 Page 362, legend for Plate 59, line 10, "Infected leaves from twigs" should read "Infected leaves and 



twigs." 



