ILLUSTRATIONS. 



PLATES. 



Page. 

 Plate I. Wheat kernels and the aerial bulblets of wild garlic. Natural size.. 22 

 II. Fig. 1. — A, 1-pound sample of garlicky wheat, Lot A, as received; £, 

 amount of garlic in 1-pound sample when received, 2.17 per cent; 

 C, amount of garlic remaining in 1-pound sample after drying and 

 cleaning, 0.05 per cent. Fig. 2. — A, 1-pound sample of garlicky 

 wheat, Lot B, as received; B, amount of garlic in 1-pound sample 

 when received, 0.56 per cent; C, amount of garlic in 1-pound sam- 

 ple after drying and cleaning, 0.06 per cent. Fig. 3. — A, 1-pound 

 sample of garlicky w^heat. Lot C, as received; B, amount of garlic 

 in 1-pound sample when received, 2.04 per cent; C, amount of gar- 

 lic remaining in 1-pound sample after drying and cleaning, 0. 16 

 .per cent 24 



III. Variation in burn of wrappers due to different fillers 34 



IV. Variation in burn of fillers due to different wrappers and binders. . . 36 

 V. Pinkroot {Spigelia marilandka L.) -_- 42 



VI. East Tennessee pinkroot ( Ruellia ciliosa Pursh ) 44 



VII. Fig. 1. — Harvesting orchard grass for seed. Fig. 2. — Method of 



shocking orchard grass; shocks showing bands at top 50 



VIII. Pots of red clover, showing the effect of lime on a soil unfavorable 



to the growth of clover 76 



IX. Fig. 1. — Pots of garden peas, showing the effect of aeration on 

 growth. Fig. 2. — The garden peas illustrated in figure 1, showing 

 the effect of aeration on nodule formation .._ 80 



TEXT FIGURES. 



Fig. 1. The apparatus used in the cranberry spraying experiments 8 



2. Apparatus for testing the burning quality of cigars 34 



3. Apparatus for testing the burning quality of wrapper tobacco 38 



4. Construction of form on which leaf is wrapped for use in apparatus 



shown in figure ; ; - . 38 



5. Cross section of the root of Spigelia mnrUandica L.. 44 



6. Cross section of the root of Ruellia ciliosa Pursh 44 



100 5 



