CONTENTS 
Page 
Diagnosis of Tuberculosis by Complement Fixation, with Special 
Reference to Bovine Tuberculosis. A. Eichhorn and A. 
Beumberg . i 
Availability of the Potash in Certain Orthoclase-Bearing Soils as 
Affected by Lime or Gypsum. Lymann J. Briggs and J. F. 
BrEAZEAEE. 21 
Ewes’ Milk: Its Fat Content and Relation to the Growth of Lambs. 
E. G. Ritzman. . .. 29 
Immunity Studies an Anthrax Serum. A. Eichhorn, W. N. Berg, 
and R. A. KEESER. 37 
Calcium Compounds in Soils. Edmund C. Shorey, Wieeiam H. 
Fry, and Wieeiam Hazen. 57 
Studies upon the Blackleg Disease of the Potato, with Special 
Reference to the Relationship of the Causal Organisms. . W. J. 
Morse.. * 79 
Effect of Fertilizers on the Composition and Quality of Oranges. 
H. D. Young. 127 
Temperature Relations of Apple-Rot Fungi. ChareES Brooks 
and J. S. CooeEy. 139 
Mechanism of Tumor Growth in Crowngall. Erwin F. Smith. .. 165 
Sorosporella uvella and Its Occurrence in Cutworms in America. 
A. T. SpEare. 189 
Measurement of the Inactive, or Unfree, Moisture in the Soil by 
Means of the Dilatometer Method. George Bouyoucos. 195 
Leafspot-Rot of Pond Lilies Caused by Helicosporium nympha- 
earum. Frederick V. Rand. 219 
Studies of the Genus Phytophthora. J. Rosenbaum. 233 
Tetrastichus bruchophagi, a Recently Described Parasite of Bru- 
chophagus funebris. Theodore D. Urbahns. 277 
Arsenical Injury Through the Bark of Fruit Trees. Deane B. 
Swingee and H. E. Morris. 283 
A Squash Disease Caused by Choanephora cucurbitarum. Fred¬ 
erick A. Woep. 319 
Discovery of Internal Telia Produced by a Species of Cronartium. 
Reginaed H. Coeeey. 329 
Effect of Irrigation Water and Manure on the Nitrates and Total 
Soluble Salts of the Soil. F. S. Harris and N. I. Butt. 333 
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