128 



All the above names, " Olive-green Gum," &c., are attemjots to describe the 

 appearance of the smooth portion of the bark, which varies from white with a bluish 

 or lead-coloured cast to even a dirty olive-green. 



The species is a stunted gum growing at high elevations, smooth-barked 

 (except at the butt), and looking as if it were blue or lead-coloured with the cold. 

 There are so many white giims that I think the name " Lead-coloured Gum " is a 

 useful one, while Black Sally is better still, and the most widely spread of existing 

 names. 



It is sometimes called " Muzzle- wood," as on account of its toughness it is 

 often selected for makins: muzzles for unweaned calves. 



Seedlings or Sucker Leaves. — Ovate-acuminate, larger in size and thinner 

 in texture than the mature leaves. The average dimensions of some seedling leaves 

 in my possession are d^ inches long by a width of If inch. 



When travelling in New England I made the following notes * on this 

 species : — " The sucker leaves present a variety of shapes and sizes. In their early 

 stages they are more or less stem-clasping and orbicular. Others are nearly reniform, 

 while some might be described as almost bilobed, or with the outline more or less 

 emarginate. Very many are about as broad as long, and scarcely acuminate, and 

 from these shapes the gradation into the normal shape of the mature leaf is very 

 gradual. Measurements gave up to 2^ x 2^ inches, and even a little more." 



Mature Leaves. — The tips are often hooked like those of U. coriacea, and 

 of some forms of other species, e.g., amygdalina. The leaves of both species when 

 dry are smooth, and usually show black dots (like B. punctata), while the parenchy- 

 matous tissue is more or less channelled. These appearances are also seen in some 

 forms of E. amygdalina and other species, and I draw attention to them in order 

 that too great importance be not attached to them. In IE. punctata these black dots 

 were considered to be of specific value. 



The shape of the leaves is lanceolate to broadly lanceolate. The leaves are 

 smaller than those of E. coriacea. The venation springs from the petiole, and the 

 primary veins are prominent and roughly parallel to the mid-rib. 



Messrs. Baker and Smith [Research on the Eucalypts) give the following 

 particulars in regard to the oil of this species : — 



Specific gravity 

 at 15° C. 



Specific rotation, 



Saponification 

 number. 



SoluhUity in 

 Alcohol. 



Constituents found. 



0-871 



- 26-1° 



2-1 



1 



Insoluble Phellandrene, sesquiter- 

 pene. 



See Proc. A%isl. Ass. Adv. Science, vii, 538. 



