342 THE GROUSE IN HEALTH AND IN DISEASE 



From the examples that have been given four deductions 

 can be made : 



(1) That it is possible by careful management to raise the 



permanent stock of Grouse on a moor, and do so without 

 increasing the danger of infection beyond the power of 

 resistance of the individual bird. 



(2) That during the various stages or periods of develop- 



ment of the carrying capacity of the moor there is a 

 corresponding limit of stock which it is dangerous to 

 come up to, and fatal to exceed. 



(3) That as far as yet ascertained the limit has not been 



arrived at on any moor beyond which a permanent 

 increase of healthy stock is not possible by improved 

 moor management. 



(4) That, though many moors by their proximity to less 



well-managed moors, and owing to the difficulty of 

 getting the stock killed in a good year, immigration, 

 abnormal seasonal conditions, etc., cannot entirely 

 escape the ravages of disease, yet there is every reason 

 to believe that the disease is both rarer, less hurtful 

 in its incidence, and quicker to pass away on the well- 

 managed than on the badly-burnt moors. 



