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PREFACE 



THE object of this book is to enable the owners 

 and the operators of "Case" Threshing Machinery 

 to become familiar with the construction and op- 

 eration of their engines and machines. The material has 

 been gathered, not only from the author's personal experi- 

 ence, but also from notes taken during visits to the outfits 

 of a large number of the best and most successful thresher- 

 men in various localities. The aim has been to avoid the- 

 orizing and only such statements are made as have been 

 demonstrated practical, by actual field experience. The 

 fact is appreciated that it is impossible to lay down specific 

 K rules for operating threshing machinery, under the ever 

 varying conditions of grain, straw and weather, but it is 

 hoped that the suggestions herein embodied will enable a 

 man of ordinary intelligence to operate his machine suc- 

 cessfully, and even to become an expert himself. 



It is the intention to continue revising it from time to 

 time, and with this aim in view, suggestions and criticisms 

 _j will be welcomed from threshermen, wherever located, to 

 whom this little volume is respectfully dedicated, 



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