16 BULLETIN 258, U. S. DEPARTMENT OF AGRICULTURE. 
DECEMBER. 
LESSON ONE. 
SUBJECT : SOILS. TOPIC : CROP ROTATION. 
Purposes. — Improve the soil, get rid of weeds, avoid plant diseases 
and insect pests, provide suitable crops. 
Kinds of crops. — Money crops, feed crops,* soil-improving crops. 
Class assignment. — Duggar's, pp. 116-122. See copy of soil survey 
of the county. 
Practical exercises. — (1) Have pupils prepare and submit three- 
year and four-year rotation courses, keeping in mind community 
conditions and needs. Remember that enriching the soil is the ulti- 
mate purpose. (2) Visit a farm where a good system of rotation is 
practiced. Take notes. 
Correlations. — Language : Written work is provided in writing out 
in good form the rotation courses. Drawing: Require the pupils to 
outline the home farm or the farm visited showing the divisions made 
for purposes of rotation. Indicate the crops grown the present year. 
Arithmetic : Develop problems on the value of rotation courses. See 
United States Department of Agriculture Bui. 132, p. 41. 
LESSON TWO. 
SUBJECT : CROPS. TOPIC : CORN JUDGING. 
Subtopics. — Object of corn judging, use of score card, selecting 
good ears, arranging an exhibit. 
Class assignment. — Duggar's, pp. 129-135. Supplement the lesson 
with notes from Farmers' Buls. 415 and 617. 
Practical exercises. — See " Exercise " and " Note to teacher,'' Dug- 
gar's, p. 135. 
Corr-elations. — Language: Require each corn-club member to sub- 
mit a written report covering such points as cost of production, kinds 
of fertilizers, method of applying fertilizers, yields, value, exhibits 
made, and prizes won. Arithmetic : Select five choice ears and five 
ordinary ears. Weigh each lot in the ear. How many ears of each 
are required to produce a bushel of 70 pounds ? Shell and weigh each 
lot. How many ears of each are required to make a bushel of 56 
pounds ? 
LESSON THREE. 
SUBJECT : FARM ANIMALS. TOPICS : TYPES AND BREEDS OF HORSES AND CATTLE. 
Class assignment. — Duggar's, pp. 284-294. Supplement the lesson 
with notes from Farmers' Buls. 612 and 619. 
Practical exercises. — (1) Gradually increase the feed to baby beeves. 
Keep a daily record of the feed weights and weekly record of the 
calf's weight. See that the calf is well housed at night and on 
