16 BULLETIN 464, U. S. DEPARTMENT OF AGRICULTURE. 
farm liens ought to average 151 eggs, as that is about 42 per cent of a 
perfect score and is less than 50 per cent of the highest record actually 
made. Without doubt both breeding and management figure in the 
improvement over average records. 
A graphic presentation of the 151-egg yield compared with the 85 
eggs which the average farm hen lays is suggested in figure 9. 
References.— Farmers' Bulletins 287; 355, pp. 34-38. 
Home projects.— Each pupil should carry out every point in man- 
agement which applies to his project. Records of labor, feed, eggs, 
and sales should be kept with care and brought to school for the 
correlation work. If diseases or pests appear, consult the references 
and call on specialists at the State college of agriculture. 
Exercises. — Have pupils individually visit the more prominent 
poultry establishments and report on the management. An evening 
talk or illustrated lecture for the public may be arranged. Farmers' 
institute lectures with lantern slides are available in the States 
Relations Service, United States Department of Agriculture. 
Correlations. — Use the pupils' labor, feed, and income records for 
arithmetical problems. Have each pupil make a balanced statement 
of cost and income at the close of each month. Have the story of 
the management of the month written with care and credit it as a 
language lesson. 
LESSON SIX. 
SUBJECT: POULTRY. DISEASES AND PESTS. 
DECEMBER. 
Topics for study. — (1) Digestive disorders: Prevent by using clean 
utensils, pure water, clean food, balanced ration, moderate use of 
new foods, keeping sparrows away. 
Signs: Lack of vigor, droppings unusual in appearance or odor, 
failure to feed well, unnatural appetite. 
(2) Diseases due to poor ventilation, overexposure, and dampness, 
may be prevented in most cases. Contagious diseases may appear 
and the fowls so affected should be isolated and expert advice gained. 
A discussion of different diseases is not necessary, but any disease 
which becomes prevalent should be studied. 
The treatment of lice, mites, spiders, and other animal pests is 
found in the publications used for references. Banish the English 
sparrow, provide a dust box, keep things clean, and disinfect fre- 
quently. 
References—Farmers' Bulletins 530; 287, pp. 42-47; 528, p. 1 1 ; 493; 
Bureau of Entomology Circulars 92, 170. 
Home 'projects. — Careful watching and preventive practices are 
important. Pupils should take particular notice of each bird each 
day. Clean roosts and nests, sterilized feed and water utensils, pure 
