i8 



and of the latter, 10 y50 = 75. If it is true that heritage is pro- 

 portionate to the purity of the animal, after a certain number 

 of years constancy might be found amongst those obtained 

 by this method of attaining perfection ; but whatever efforts 

 the breeder may make, he can never procure the absorption 

 of the entire inferior by the improving blood ; even if the 

 produce were to offer all the characteristics of pure blood, on 

 a minute examination of a certain number traces of an 

 ignoble mother would be discovered ; the breeder could never 

 attain an undeviating result ; cases of throwing back would 

 always occur ; this would happen more or less frequently, 

 but happen they would most undoubtedly. 



We have still to examine another method of raising 

 flocks and herds, viz. : 



Acclimatisation, which consists in importing male 

 and female reproducers foreign to the country to which they 

 are brought. 



Soil, climate, quality of the air, atmospheric 

 pressure, nature of nourishment, and all exterior and interior 

 circumstances, unite to influence animals thus imported, and 

 cause more or less grave modifications in their nature ; hence 

 it is said that one race adapts itself more or less easily to a 

 country. 



If the new conditions in which the imported animals 

 are placed were identically the same as those which have 

 co-operated in the formation of their race there is no reason 

 why this breed should undergo any modification whatever ; 

 but this does not often happen. Changes take place some- 

 times for the better, sometimes for the worse ; so that in order 

 to secure success by acclimatisation it must be accompanied 

 by careful selection. 



For Acclimatisation to be performed under favour- 

 able conditions, it should be made with the help of the best 

 procurable reproducers of the race to be acclimatised, to 

 insure which, the question of price should be regarded as a 

 secondary consideration. Money devoted to the purchase of 

 reproducers of standing is money judiciously expended ; it 

 becomes almost immediately a source of profit to the clever 

 breeder. 



Acclimatisation exacts from him who may try it 

 certain knowledge respecting the hygiene and nourishment 

 which have served to form and to preserve the race which he 

 seeks to acclimatise. 



By a careful management of changes, the chances 

 of success become more favourable ; there are cases in which 

 it would be a great fault to attempt a direct and complete 

 acclimatisation on imported animals ; as, for instance, if 

 high-priced, and if the place from which they come and that 

 to which they are transferred present very notable differences. 



