46 EUCALYPTUS. 



though of the same kind of wood when differently ex- 

 posed in a harbor. The jarrah has grown in several shel- 

 tered places in California as at the Cahuenga, but so slowly 

 and it so often fails to grow at all, that there is little en- 

 couragement to plant it. 



While a large number of instances of teredo resistance 

 in the Eucalyptus marginata are reported, carefully con- 

 ducted experiments like that in Auckland Harbor, do not 

 substantiate them. 



We will know more about this teredo pest after awhile. 

 The introduction of some natural enemy of the teredo has 

 been suggested and a great variety of experiments are 

 being tried, amongst them is one at San Pedro, where the 

 piles are protected by vitrified sewer pipe. 



I have a report of a Jarrah, 65 feet high, 25 years old, 

 at Santa Clara. The identification of the species has not 

 been verified, however. 



The best specimens of Eucalyptus marginata are at the 

 Cahuenga, Los Angeles County. The general type of poor 

 growth in California, can be seen at the Forestry Station, 

 Santa Monica, and at the Paradise Nurseries, South 

 Pasadena. 



It may be well to mention here that the common blue 

 gum produces, about Santa Barbara, a pile that resists both 

 the teredo and limnaria better than the Oregon spruce 

 sticks, better even than these creosoted. In consequence, 

 the wharf at that point is now maintained by blue gum 

 piling. 



