18 



FARMERS BULLETIN 606. 



working of natural processes of importance agriculturally, such as 

 soil erosion; views of different kinds of farm niachinery and equip- 

 ment; views illustrating experiments and demonstration field work 

 carried on by the school. Especially interesting are pictures which 

 show contrasts of good and bad farming methods. It will be found 

 that a good picture collection of this sort will prove to be exceedingly 

 useful. 



CHARTS AND MAPS. 



Much more use can be made of charts in the teaching of agriculture 

 than is usually done. They can be used to record formulas and data 

 which may be wanted again at some future time, but which are likely 



to be lost if placed 

 on the blackboard 

 where they may be 

 erased. Thus, plans 

 for the reorganization 

 of farms of the vicin- 

 ity may be worked 

 out by the pupils and 

 charted for future ref- 

 erence; schemes for 

 proper system of crop 

 rotation on these 



'-NECK', rwi ,r^^ PR'ME '>TaoT"l /RUMPx 



'.24ll«.\CHyCKv^ OF RIB \ 92 lbs. felRLOIN/'zaibs. 



\6eibs. '> @ /34.lbs./€) 7chs. 



\ @ ,20 chs. 



\ 14-chs. ' liZYzcti,' ROUND 



.-<-'—" \r--^ I / 124 lbs. 



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Fig. 15.— Chart showing cuts of beef. 



farms may also be charted; formulas for fertilizer compounds or 

 spraying mixtures maybe written on a chart and kept for reference; 

 and drawings of various kinds, such as those showing the various cuts 

 in a beef carcass, ma}^ thus be prepared for general use (fig. 15). 



A good chart can be made by the use of heavy manila paper cut 

 into sheets of convenient size, such as 2^ by 3 feet, these sheets being 

 fastened together at one end by nailing them between two pieces of 

 lath. Screw eyes fastened in the ends of one of these laths with a 

 cord tied to them will serve to support the chart on the wall.. 



Maps for use in the study of agriculture should be chiefly local in 

 character. For most regions topographical maps and soil maps niay 

 be obtained. It wiU be well also to have a map of the forest land of 

 the locality if possible to obtain one. 



o 



