158 THE GROUSE 



others the benefit of his advice, laying out 

 the drives on High Force, Longshaw, and 

 other moors in the district, and giving 

 instruction in his ways and methods to 

 the surrounding keepers. 



It soon became evident that the adop- 

 tion of regular driving on a Yorkshire 

 moor was attended by a surprising in- 

 crease in the annual yield. 



In the autumn of 1849, auspice 

 George Sykes, 224 brace of grouse were 

 killed in a day's driving on Rushworth. 

 This was an unprecedented total for an 

 English moor, bearing comparison with 

 the best records of the Highlands, which 

 were then regarded as the natural home 

 of the grouse. 



This " unearned increment " of driving- 

 has been the subject of much controversy. 

 It is not easy, on many moors, to de- 

 termine what proportion of the un- 

 doubted increase can be directly attri- 

 buted to regular driving, or how much is 

 rather due to better management under a 

 larger staff of keepers, increased area 



