PORK PRODUCTION FOR RURAL SCHOOLS. 25 



points: (a) The kinds of diseases, (b) the number of hogs affected by- 

 each disease, (c) the treatment used in connection with each disease, 

 (d) the number of mature hogs lost from disease, (e) the estimated 

 value of such hogs, (/) the number of pigs lost from disease, (g) the 

 estimated value of the pigs, (h) and the total estimated value of all 

 hogs lost from disease. These facts should be tabulated and pre- 

 served for study. 



Correlations. — Written work and arithmetic problems are involved 

 in the foregoing practical exercises. 



PIG-CLUB WORK. 



In the use of this publication it is suggested that teachers apply 

 the facts set forth in the lessons to the activities of the pig-club 

 work. For full instructions on pig-club work and record books to 

 be used by members of pig clubs, teachers and pupils should write 

 to the extension divisions of the State agricultural colleges and to 

 the United States Department of Agriculture. 



