EUCAL YPTUS. 97 



the native cotton wood, or balm of Gilead. The cotton- 

 wood seedlings come up in the washes oftenest; next are 

 the oak trees. Sycamore seedlings are very rare in the 

 interior canons and washes, but extraordinarily numerous 

 in the Santa Monica canons every few years. Often the 

 young trees start, especially the oaks, and then die from 

 the prolonged drought of the dry season. The indications 

 from these torrent bed growths is that our climate is 

 slowly changing and becoming drier. Another suggestion 

 in this line is the almost entire absence of greasewood 

 seedlings. These bushes, the roots of which make such 

 fine fire wood, cover large areas in our southern foothills 

 on granitic formation. The absence of reproductive power 

 is similar to that of our high type Americans who seem 

 to be progressively Hearing absolute sterility and the ex- 

 tinction of the American as an historical entity. 



EUCALYPTUS INCRASSATA. 



Eucalyptus incrassata is one of the growths forming 

 the mallee scrub. It is a tall growing bush with leaves 

 heavily charged with oil and reported as growing on 

 sandy interior ridges in Australia. This, with the other 

 mallees, forms a main source of the supply of Eucalyptus 

 oil. A great advantage of the mallee scrub as a source 

 of oil is the ease with which the foliage can be gathered 

 and the capacity these have of sending out new growth. 

 Where sandy conditions prevail, or in dry hilly sections 

 these mallees may be found valuable as a source of 

 Eucalyptus oil. 



Eucalyptus oleosa, Eucalyptus gracilis and Eucalyptus 



