44 FOREST CULTURE. 



ready has the malaria-destroying exhalations of Eu- 

 calyptus globulus been practically proved beyond a 

 doubt in Europe, Africa, and America. It is confi- 

 dently stated that in the fatal Roman Pontine Marshes, 

 and the no less fatal swamps of Lombardy and other 

 parts of Italy, the Eucalyptus globulus has rendered 

 healthy, localities in which to sleep a single night 

 was all but certain death. 



In America, the Gum-tree is being most extensive- 

 ly planted, with the view of making uninhabitable 

 districts healthy. In fact, so ample are the proofs of 

 its efficacy that millions of malarious acres in all parts 

 of the globe where the climate suits it will, within a 

 very few years, be planted witli "Blue Gum." 



Eucalyptus globulus has already become noted in all 

 temperate climes as " The Fever-tree," and certain 

 it is that it truly deserves the name. Doubtless other 

 species of Eucalyptus possess the same beneficial prop- 

 erty, but globulus is the only one which has yet been 

 so abundantly tested by practical trial. 



It is the easiest of the tribe to rear, and develops 

 from the seedling into the tree with great rapidity. 

 So great has become the demand from Europe and 

 America for seed that the forests of Tasmania are 

 threatened with annihilation. To give our friends 

 some idea of the demand, we sold have nearly half a 

 ton of seed during the past year. One pound weight 

 should produce many thousands of plants ; this will 

 give some estimate of the enormous number of trees 

 that must now be planted all ovor the world. 



