26 FOREST CULTURE AND 



" The stringy-bark tree has a very thick bark on the 

 trunk, and of the same color as the bark of the Bed- 

 wood. The Blue, White, and Red Gums, after they 

 become large trees, shed their bark, which grows in 

 growths, the outside layers, too small for the inner, 

 crack open, the wind gets between the growths, 

 tears it off in strips three or four inches wide, and 

 sometimes one hundred feet long ; the debris cover- 

 ing the ground at the trunk five or six feet in depth. 



"The Iron-bark tree does not grow in Tasmania ; 

 it is an Australian tree ; has a rough bark, something 

 like the bark of the Black Oak of Canada. The bark 

 and the wood are very hard and heavy ; will sink in 

 water, like a stone ; will last for years ; in fact, I do not 

 believe it will ever rot. The largest trees of this va- 

 riety I have seen were not over four feet in diameter. " 



Mr. Casey of Melbourne recommends the Eucalyp- 

 tus rostrata as being of great value, more hardy tlian 

 the Blue Gum, and possessing all the sanitary proper- 

 ties, capable of a high polish, and specially adapted 

 for piles and for ship-timber. 



The Eucalyptus globulus, or Blue Gum, is a very 

 tender plant when young. It is an evergreen of 

 rapid growth, and the young shoots are injured by a 

 few degrees of frost. It is reported that trees have 

 been destroyed by cold at New Orleans after reaching 

 a height of fifteen feet. 



I have selected from the one hundred to one hun- 

 dred and fifty species of the Eucalypti family the fol- 

 lowing varieties: Eucalyptus globulus, E. rostrata, E. 

 marginata, E. syderoxylon, E. brachypoda, E. obli- 

 qua, E. platyphilla, E. phonicea, and E. amygdalina.* 



* The description as given in the lecture is omitted in this place, as it 

 appears more fully on pages 32 to 39. 



