EUCALYPTUS MICROTHECA. 



extant. Among those, which sprout from the root, after the cutting of the stem or its destruction 

 by fire or other agencies, are : E. globuhis, E. viminalis, E. goniocalyx, E. amygdalina ; some 

 other species show less or little inclination to form saplings from the root, among them 

 E. rostrata ; but all kinds of Eucalypts become disseminated spontaneously more copiously and 

 more readily than almost any other sorts of trees, the number of seeds, shed annually from any 

 single Eucalyptus-tree, being enormous. Prof Charles Naudin observes, that in the countries 

 around the Mediterranean Sea Eucalyptus-growth has commenced to become spontaneous, so that 

 many species, to use the term of Mr. H. C. Watson, have there become " colonized " already, the 

 first introduction being in many cases due to the writer. If any Eucalypts are felled in the wet 

 season, when the flow of sap is most copious and vigorous, quite a mass of offshoots may emanate 

 from the base of the stump, they may rise to a man's height in a year, and may afford in a few 

 years quite a profitable return in fencing material or fuel, particularly by timely thinning out ; 

 however to subdue them early, if that be required, may need several cuttings in the season. 

 Where tree-extractors cannot be employed, to clear any land for culture or pasture from 

 Eucalypts, the ringing process is frequently adopted, it being always understood, that trees of real 

 timber-value should not be sacrificed by that destructive procedure. For "ringing" however it is 

 needfal, to cut well around into the actual wood of the stem ; if this is done in the height of the 

 summer, few or no ofi'shoots will be formed, to encumber the ground anew ; the mere removal of 

 a ring of bark will — as a rule — not suffice, to extinguish the life of an Eucalyj)tus-tree, the union 

 between the severed portions of the bark being readily re-established by the particularly vigorous 

 vitality of the cambium in these kinds of trees. 



Explanation of Analttic Details. — 1, an unexpanded flower, the lid lifted ; 2, longitudinal section of an 

 tmexpanded flower ; 3, some of the outer stamens detached ; 4 and 5, front- and back-view of an anther, with part of its 

 filament ; 6, style and stigma ; 7 and 8, transverse and longitudinal section of a fruit ; 9 and 10, fertile and sterile seeds ; 

 11, portion of a leaf; all figures magnified, but to various extent. 



Supplemental Plate. — Cuticle of leaves of E. Abergiana, E. alpina, E. botryoides, E. buprestium, E. clavigera, 

 E. Cloeziana, E. globulus, E. gomphocephala, E. incrassata, E. largiflorens, E. marginata, E. microcorys, E. niicrotheoa, 

 E. peltata, E. Raveretiana, E. resinifera, E. setosa, E. siderophloia, E. tetrodonta, E. Torelliana ; exhibiting cellules and 

 stomata ; all iigures diametrically 450 times magnified. 



