FOREST EXPLOITATION. 151 



successive cycles of the revolution or rotation of exploita- 

 tions. The second crop is not equal to the primitive or 

 original, nor the third to the second. 



It is possible ofttimes to trace in the embryo tic struc- 

 ture the rudiments of the organs of the fully developed 

 organism ; but how different are the appearances presented 

 by the two ! How like, and yet how unlike, are the 

 Chrysalis and the Butterfly ! Similar is the similitude 

 and the difference between the old system ct tire et aire, 

 and the new system of forest economy now carried out in 

 Germany and in France. I know not of a name by which I 

 can designate this for the purpose of contradistinction and 

 specification. To give it a designation from the name of 

 the country would be improper, inasmuch as while it is 

 carried out in both these countries, it is not peculiar to 

 either country alone. To give it a designation from the 

 deviser would be premature, inasmuch as my readers are 

 not supposed to be familiar with its history, and even in the 

 case of many of those who are acquainted with the history 

 of its evolution, to associate it exclusively with the name 

 of any one man would do injustice to others, to whom it 

 owes much. 



There is in this system of management a three-fold 

 object sought, production soutenue, regeneration naturelle, 

 and amelioration, progressive ; not one or other but all of 

 these combined, and so combined not only that each shall 

 be secured without detriment to the others, but that all 

 shall be secured as the result of what may be done with a 

 special view to the accomplishment of any, what is done 

 in view of all promoting each, what is done in view of 

 each promoting all: a combination of ends gained in the 

 accomplishment of one, such as is ofttimes seen in nature, 

 for example in the honeycomb, where economising of 

 space, of material, and of labour, are so combined, that 

 apparently it may with equal propriety be described in 

 the same phrase, with either of these three ends treated 

 as if the one end in view. 



What is sought is a sustained production throughout a 



