IV Journal of Agricultural Research voi. xiii 



Chemistry and Histology of the Glands of the Cotton Plant, w-ith page 



Notes on the Occurrence of Similar Glands in Related Plants. 



Ernest E. Stanford and Arno Viehoever 419 



Pox or Pit (Soilrot) of the Sweet Potato. J. J. Taubenhaus 437 



Boron: Its Effect on Crops and Its Distribution in Plants and 



Soil in DifiFerent Parts of the United States. F. C. Cook and 



J. B. Wilson 451 



Destruction of Tetanus Antitoxin by Chemical Agents. W. N. 



Berg and R. A. Kelser 471 



Relation of the Density of Cell Sap to Winter Hardiness in Small 



Grains. S. C. Salmon and F. L. Fleming 497 



Influence of Temperature and Precipitation on the Blackleg of 



Potato. J. RosENBAUM and G. B. Ramsey 507 



A New Bacterial Disease of Gipsy-Moth Caterpillars. R. W. 



Glaser 515 



Physical Properties Governing the EfRcacy of Contact Insecticides. 



William Moore and S. A. Graham 523 



Inoculation Experiments w4th Species of Coccomyces from Stone 



Fruits. G. W. Keitt 539 



Nysius ericae, the False Chinch Bug. F. B. ]\Iilliken 571 



Comparative Transpiration of Corn and the Sorghums. Edwin C. 



Miller and W. B. Coffman 579 



Inorganic Composition of a Peat and of the Plant from Which It 



was Formed. C. E. Miller 605 



Digestibility of Corn Silage, Velvet-Bean Meal, and Alfalfa Hay 



When Fed Singly and in Combinations. P. V. Ewing and 



F.H.Smith 611 



Effects of Various Salts, Acids, Germicides, etc.. Upon the Infec- 



tivity of the Virus Causing the Mosaic Disease of Tobacco. 



K. A. Allard 619 



A Study of the Physical Changes in Feed Residues Which Take 



Place in Cattle During Digestion. P. V. Ev/ing and L. H. 



Wright 639 



Sunscald of Beans. H. G. MacMillan 647 



A Third Biologic Form of Puccinia graminis on Wheat. ]\I. N. 



Levine and E. C. Stakman 651 



ERRATA AND AUTHORS' EMENDATIONS 



Page 44, line 2, "simple apparatus'* should read "simple digestive apparatus." 



Page 22 1, Table V, 7th column, line i under "Per cent. " should read "0.300." Last column, line i, under 

 "Atmospheres" should read "4.459." 



Page 265, line 14, "not noticeably sunken" should read "noticeably sunken." 



Page 271, line II from bottom, "Hedivigia" should read "Hedwigia." 



Page 491, lines, "Table II "should read "Table V." 



Page 517, footnote under Table III, hne 3 after "ninth day" omit "the." Line 4, omit "the" before 

 "two." 



Page 652, line 20, "P. graminis trilici compacti under greenhouse conditions." should read "P. graminis 

 tritici." 



