790B THE COMPLETE GHAZIER. BOOK vni. 



These machines are made for working with from one to four horses. In 

 fig. 363 we show how a set of Barford & Perkins's food-preparing 

 machines can be worked by one gear ; and in many cases this will be 

 found most economical. 



There is no better way of acquiring a knowledge of agricultural 

 machinery than that afforded by a study of the progress of invention 

 in this branch of constructive art. The further improvement of all 

 classes of agricultural appliances is bound, moreover, to be stimulated 

 by an acquaintance with what has been accomplished in the past. 

 Hence, we feel that we are doing a service to the reader who is 

 specially interested in the subjects that have been dealt with in this 

 Book of " The Complete Grazier," by recommending to his perusal two 

 papers written by the late Mr. Dan. Pidgeon, Assoc. Inst. C.E. " The 

 Development of Agricultural Machinery" ("Journal of the Eoyal 

 Agricultural Society," vol. i., 3rd series, 1890); and "The Evolution 

 of Agricultural Implements" (the same Journal, vol. iii., 3rd series, 

 1892). These articles give a good account of their subject up to the 

 dates at which they were respectively written. 



