AGRICULTURE FOR SOUTHERN SCHOOLS. 25 
Lessons 19 anp 20.—The Gasoline Engine. 
1. Construction. 
2. Types of engines. 
3. Uses. 
4. General problems of operation. 
Special reference.—The Use of Alcohol and Gasoline in Farm Engines, Farmers’ 
Bulletin 277. 
EXERCISE 12.—Study of the Gasoline Engine. 
See Farmers’ Bulletin 638, Exercise 10, Naming Parts of Gas 
Engine, and Exercise 11, Wiring Engine. 
Lesson 21.—Stationary Engines and Their Use. 
1. Selecting an engine. 
2. Arrangement of mills, etc. 
3. Connection of machines. 
4. Operation. 
EXERCISE 13.— Use of Gasoline Engine. 
-, See Farmers’ Bulletin 638, Exercise 12, Running Gas Engine, and 
Exercise 13, Troubles on Gas Engine. 
Lesson 22.—Traction Engines and Automobiles. 
1. Use of the tractor upon the farm. 
2. Types of traction engines. 
3. The automobile on the farm. 
Special references.—Farm Experience with the Tractor, Department Bulletin 174. 
An Economic Study of the Farm Tractor in the Corn Belt, Farmers’ Bulletin 719. 
EXERcIsEs 14 anp 15.—Study and Use of Automobile. 
Students who know how to operate an automobile should aid the 
instructor in teaching those not familiar with the machine. 
Lesson 23.—Care of Farm Machinery. 
1. Importance of good care. 
_ 2. Details of care. 
Lesson 24.—Repair of Farm Machinery. 
_ 1. The farm shop and its equipment. 
2. Utilization of winter season. 
3. Importance of supply of extras and repair material. 
4. Utilization of material on the farm. 
Special reference.—The Repair of Farm Equipment, Farmers’ Bulletin 347. 
Exercise 16.—Listing Repairs for Old Machinery. 
~ See Farmers’ Bulletin 638, Exercise 26, Making List of Repairs for 
Machine. 
ce FARM STRUCTURES. 
(10 lessons, 6 exercises.) 
Reference.—Farm Architecture, Farmers’ Bulletin 126. 
Lesson 1.— Use of Cement and Concrete on the Farm. 
1. For what used. 
2. Selection of materials. 
3. Mixing of materials. 
