Jan. 2-Mar. 26, 1917 
Illustrations 
XV 
Page 
6. Curve showing the disappearance of sugars in series 2. 371 
7. Curves showing the increase in amino nitrogen and ammonia nitrogen 
in series 2. 372 
8. Curves showing the formation of alcohol in series 3 and 4. 373 
9. Curves showing the development of acidity in series 4. 374 
10. Curve showing the increase in amino nitrogen in series 4. 375 
11. Curves showing the development of acidity in series 5. 376 
12. Curve showing the formation of alcohol in series 5. 377 
13. Curves showing the rate of evolution of carbon dioxid. (Curves 2 and 
3 are coincident during the first one-half day.).. 378 
Little-Leaf of the Vine 
Fig. i. Diagram of the distribution of grapevines affected with little-leaf: A, 
Moderately affected vineyard; B, a very badly affected vineyard... 383 
2. Graph showing the results of application of gypsum for the control of 
little-leaf.. 396 
Spore-Forming Bacteria of the Apiary 
Fig. 1. Bacillus mesentericus: Smear from an 18-hour-old agar slope. 411 
2. Bacillus vulgatus: Smear from a 9-day-old agar culture. 412 
3. Bacillus orpheus; Smear from a 4-day-old agar culture. 413 
4. Bacillus alvei: Smear from a 48-hour-old agar culture. 414 
5. Bacillus larvae: Smear direct from a diseased larva. 416 
6 . Bacillus pluton: Smear direct from a diseased larva. 417 
Fusarium-Blight, or Wilt Disease, of the Soybean 
Fig. 1. A~G, Types of macroconidia of the species of Fusarium on soybean. 
H , Cross section of the xylem portion of a diseased soybean stem, 
showing the invasion of the medullary rays {a) and the xylem vessels 
( b ) by mycelia of the species of Fusarium on soybean. 426 
Dissemination of the Angular Leafspot of Cotton 
Fig. 1. Diagram of the experimental field of cotton: A, Portion of the field in 
which the row inoculated on May 26, 1916, was located. B, Part of 
the plants diagramed in A , showing the reversal of spread between 
June 27 and July 30. C t Top row: Row selected for inoculation on 
June 30. Second row; same on July 15, showing the slight infection. 
Below: Chart of neighboring plants showing spread of the disease on 
July 30 to the west and the relative freedom of the rows to the east.. 467 
2. Graphs showing direction of wind and its velocity and the amount of 
rainfall during thunderstorms... 470 
