EUCALYPTUS TBEES. 101 



According to this calculation we could raise from one 

 pound of seeds of the Blue Gum-tree one hundred and 

 sixty-one thousand seven hundred and ninety-two 

 plants. Let us suppose, for argument's sake, that only 

 half the seeds of such grew, the number of seedlings 

 would be enormous ; and even if only the seedlings 

 of one quarter of the seeds of one pound finally were 

 established, they would suflBce, in the instance of the 

 Blue Gum.tree,to cover four hundred and four acres, 

 assuming that we planted at the rate of one hundred 

 trees to the acre (allowing for thinning out). The fol- 

 lowing notes, for comparison, may be of interest: 



One ounce of: Contains Grains, 



Finns pinaster 7S0 



Pinus pinea , 33 



Finns haleppeusis 940 



Pinus alba 10,080 



Cupressua aempervirens 4,970 



FraxinuB omus 316 



Betulaalba 34,560 



Acer psaudoplatanus 183 



It seems marvellous that trees of such colossal di. 

 mensions, counting among the most gigantic of the 

 globe, should arise from a seed-grain so extremely 

 minute. 



The exportation of Eucalyptus-seeds has already as- 

 sumed some magnitude. Our monthly mails conveyed 

 occasionally quantities to the value of over £100; the 

 total export during the past twelve years must have 

 reached several or, perhaps, many thousand pounds 

 sterling. For the initiation of this new resource, by 

 his extensive correspondence abroad, the writer can 

 lay much claim ; and he believes that almost any 

 quantity of Eucalyptus-seeds could be sold in markets 

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