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methods of planting corn, seeding grains, grasses, and otlier forage crops; culture of 

 corn, potatoes, and sugar Ijeets; practice in treating oats and wheat for snuit and 

 potatoes for scab and studying the effects upon the crops; com1)ating chinch bugs 

 and other injurious insects. Other practical experiments may be arranged with the 

 instructor. Special opportunities will be given to advanced students of high class 

 standing to take up experiments, under assignment and direction of the instructor 

 in farm crops, on certain large farms in the State, arrangements having been made 

 with the farm owners or managers for such experiments. II, second half, and sum- 

 mer vacation; daily; arrange time; (2^ to 5). 

 Required : Agronomy 7, 12. 



9. Soil pJnj.vcs and luauagement.— This course is designed to prepare the student 

 better to understand the effects of the <lifferent methods of treatment of soils and the 

 influence of these methods upon moisture, texture, aeration, fertility, and produc- 

 tion. It comprises a study of the origin of soils, of the various methods of soil for- 

 mation, of their mechanical composition and classification; also soil moisture and 

 means for conserving it, soil texture as affecting ca^illaritv, osmosis, and diffusion, 

 as affected by plowing, harrowing, cultivating, rolling, and cropping; of the wasting 

 of soils by washing; fall or spring plowing and drainage as affecting moisture, tem- 

 peratures, and root development. The work of the class room is supplemented by 

 laboratory work, comprising the determination of such questions as specific gravity, 

 relative gravity, water-holding capacity and capillary power of various soils; also the 

 study of the physical effects of different systems of rotation and of continuous crop- 

 ping with various crops, and the mechanical analysis of soils. I; daily; 1, 2; (.5). 



Required: Physics 1, 3 (first semester's work), and Agronomy, 2. 



10. f'^pedal problems in mil physics.— Tins work is intended for students wishing to 

 specialize further in the study of the physical properties of soils, and will include the 

 determinaton by electrical methods of the teuiperature, moisture, and soluble salt 

 content of various soils under actual field conditions; effect of different depths of 

 plowing, cultivation, and rolling on soil conditions; effect of different methods of 

 preparing seed beds; the physical questions involved in the formation and redemp- 

 tion of the so-called "alkali," "barren" or "dead dog" soils, and of other peculiar 

 soils of Illinois. II, or summer vacaticm; daily; arrange time; (5). 



Required: Agronomy 9. 



11. Soil bacteriologi/.—A study of the mor])hology and activities of the bacteria which 

 are connected with the elaboration of plant food in the soil, or which induce changes of 

 vital importance to agriculture, with regard to the effects of cropping and tillage upon 

 these organisms, and with special reference to the study of those forms which are 

 concerned with the foriuatiou of nitrates and nitrites in the soil and with the accumu- 

 lation (tf nitrogen by leguminous crops. Class roomand laboratory work. II; daily; 

 6, 7; (5). 



Required: Botany 5; Chemistry 3b, 4. 



12. Fcrlilizers, rotations, and fertility. —The infiuence of fertility, natural or supplied, 

 upon the yield of various crops; the effect of different crops upon the soil and upon 

 succeeding crops; different rotations and the ultimate effect of different .systems of 

 farming upon the fertility and productive capacity of soils. The above will l)e sup- 

 plemented by a laboratory study of manures and fertilizers, their composition and 

 their agricultural and conuuercial value; of soils cropped continuously with different 

 crops and with a series of crops; of the fertility of soils of different types, or classes 

 from different sections of Illinois. II; daily; 1, 2; (5). 



Required: Chemistry 13; Agronomy 6, 9. 



13. Investigation of the fertility of special soils.— This course is primarily designed to 

 enable the student to study the fertility of those special soils in which he may be 

 particularly interested, and to become familiar wnth the correct principles and 

 methods of such investigations. It will include the determination of the nature and 



